diff --git a/doc/api_samples/os-extended-services-delete/services-get-resp.xml b/doc/api_samples/os-extended-services-delete/services-get-resp.xml
index bb5b46770a..b5182a38be 100644
--- a/doc/api_samples/os-extended-services-delete/services-get-resp.xml
+++ b/doc/api_samples/os-extended-services-delete/services-get-resp.xml
@@ -1,6 +1,6 @@
 <services>
-    <service status="disabled" binary="nova-scheduler" zone="internal" state="up" host="host1" updated_at="2012-10-29T13:42:02.000000" id="1"/>
-    <service status="disabled" binary="nova-compute" zone="nova" state="up" host="host1" updated_at="2012-10-29T13:42:05.000000" id="2"/>
-    <service status="enabled" binary="nova-scheduler" zone="internal" state="down" host="host2" updated_at="2012-09-19T06:55:34.000000" id="3"/>
-    <service status="disabled" binary="nova-compute" zone="nova" state="down" host="host2" updated_at="2012-09-18T08:03:38.000000" id="4"/>
+    <service status="disabled" binary="nova-scheduler" zone="internal" state="up" host="host1" updated_at="2012-10-29 13:42:02" id="1"/>
+    <service status="disabled" binary="nova-compute" zone="nova" state="up" host="host1" updated_at="2012-10-29 13:42:05" id="2"/>
+    <service status="enabled" binary="nova-scheduler" zone="internal" state="down" host="host2" updated_at="2012-09-19 06:55:34" id="3"/>
+    <service status="disabled" binary="nova-compute" zone="nova" state="down" host="host2" updated_at="2012-09-18 08:03:38" id="4"/>
 </services>
diff --git a/doc/api_samples/os-instance-actions/instance-action-get-resp.xml b/doc/api_samples/os-instance-actions/instance-action-get-resp.xml
index 2ebc14061d..0fa985798c 100644
--- a/doc/api_samples/os-instance-actions/instance-action-get-resp.xml
+++ b/doc/api_samples/os-instance-actions/instance-action-get-resp.xml
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='UTF-8'?>
-<instanceAction instance_uuid="b48316c5-71e8-45e4-9884-6c78055b9b13" user_id="789" start_time="2012-12-05T00:00:00.000000" request_id="req-3293a3f1-b44c-4609-b8d2-d81b105636b8" action="reboot" message="" project_id="147">
+<instanceAction instance_uuid="b48316c5-71e8-45e4-9884-6c78055b9b13" user_id="789" start_time="2012-12-05 00:00:00.000000" request_id="req-3293a3f1-b44c-4609-b8d2-d81b105636b8" action="reboot" message="" project_id="147">
   <events finish_time="2012-12-05 01:02:00.000000" start_time="2012-12-05 01:00:02.000000" traceback="" event="schedule" result="Success"/>
   <events finish_time="2012-12-05 01:04:00.000000" start_time="2012-12-05 01:03:00.000000" traceback="" event="compute_create" result="Success"/>
 </instanceAction>
diff --git a/doc/api_samples/os-services/services-get-resp.xml b/doc/api_samples/os-services/services-get-resp.xml
index 997fc3945f..6d42fce85c 100644
--- a/doc/api_samples/os-services/services-get-resp.xml
+++ b/doc/api_samples/os-services/services-get-resp.xml
@@ -1,6 +1,6 @@
 <services>
-    <service status="disabled" binary="nova-scheduler" zone="internal" state="up" host="host1" updated_at="2012-10-29T13:42:02.000000" disabled_reason="test1"/>
-    <service status="disabled" binary="nova-compute" zone="nova" state="up" host="host1" updated_at="2012-10-29T13:42:05.000000" disabled_reason="test2"/>
-    <service status="enabled" binary="nova-scheduler" zone="internal" state="down" host="host2" updated_at="2012-09-19T06:55:34.000000" disabled_reason=""/>
-    <service status="disabled" binary="nova-compute" zone="nova" state="down" host="host2" updated_at="2012-09-18T08:03:38.000000" disabled_reason="test4"/>
+    <service status="disabled" binary="nova-scheduler" zone="internal" state="up" host="host1" updated_at="2012-10-29 13:42:02" disabled_reason="test1"/>
+    <service status="disabled" binary="nova-compute" zone="nova" state="up" host="host1" updated_at="2012-10-29 13:42:05" disabled_reason="test2"/>
+    <service status="enabled" binary="nova-scheduler" zone="internal" state="down" host="host2" updated_at="2012-09-19 06:55:34" disabled_reason=""/>
+    <service status="disabled" binary="nova-compute" zone="nova" state="down" host="host2" updated_at="2012-09-18 08:03:38" disabled_reason="test4"/>
 </services>
diff --git a/doc/api_samples/os-services/services-list-get-resp.xml b/doc/api_samples/os-services/services-list-get-resp.xml
index 68809e9aaf..e9868c2f26 100644
--- a/doc/api_samples/os-services/services-list-get-resp.xml
+++ b/doc/api_samples/os-services/services-list-get-resp.xml
@@ -1,6 +1,6 @@
 <services>
-    <service status="disabled" binary="nova-scheduler" zone="internal" state="up" host="host1" updated_at="2012-10-29T13:42:02.000000"/>
-    <service status="disabled" binary="nova-compute" zone="nova" state="up" host="host1" updated_at="2012-10-29T13:42:05.000000" />
-    <service status="enabled" binary="nova-scheduler" zone="internal" state="down" host="host2" updated_at="2012-09-19T06:55:34.000000"/>
-    <service status="disabled" binary="nova-compute" zone="nova" state="down" host="host2" updated_at="2012-09-18T08:03:38.000000"/>
+    <service status="disabled" binary="nova-scheduler" zone="internal" state="up" host="host1" updated_at="2012-10-29 13:42:02"/>
+    <service status="disabled" binary="nova-compute" zone="nova" state="up" host="host1" updated_at="2012-10-29 13:42:05" />
+    <service status="enabled" binary="nova-scheduler" zone="internal" state="down" host="host2" updated_at="2012-09-19 06:55:34"/>
+    <service status="disabled" binary="nova-compute" zone="nova" state="down" host="host2" updated_at="2012-09-18 08:03:38"/>
 </services>
diff --git a/doc/api_samples/os-volumes/os-volumes-detail-resp.xml b/doc/api_samples/os-volumes/os-volumes-detail-resp.xml
index b849c2d2ea..c6ff8c23e7 100644
--- a/doc/api_samples/os-volumes/os-volumes-detail-resp.xml
+++ b/doc/api_samples/os-volumes/os-volumes-detail-resp.xml
@@ -1,9 +1,9 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <volumes>
-  <volume status="in-use" displayDescription="Volume Description" availabilityZone="zone1:host1" displayName="Volume Name" volumeType="Backup" snapshotId="None" id="a26887c6-c47b-4654-abb5-dfadf7d3f803" createdAt="2008-12-01T11:01:55" size="100">
+  <volume status="in-use" displayDescription="Volume Description" availabilityZone="zone1:host1" displayName="Volume Name" volumeType="Backup" snapshotId="None" id="a26887c6-c47b-4654-abb5-dfadf7d3f803" createdAt="2008-12-01 11:01:55" size="100">
     <attachments>
       <attachment device="/" serverId="3912f2b4-c5ba-4aec-9165-872876fe202e" id="a26887c6-c47b-4654-abb5-dfadf7d3f803" volumeId="a26887c6-c47b-4654-abb5-dfadf7d3f803"/>
     </attachments>
     <metadata/>
   </volume>
-</volumes>
\ No newline at end of file
+</volumes>
diff --git a/doc/api_samples/os-volumes/os-volumes-get-resp.xml b/doc/api_samples/os-volumes/os-volumes-get-resp.xml
index 1a516d5d2a..a65b78c9de 100644
--- a/doc/api_samples/os-volumes/os-volumes-get-resp.xml
+++ b/doc/api_samples/os-volumes/os-volumes-get-resp.xml
@@ -1,7 +1,7 @@
 <?xml version='1.0' encoding='UTF-8'?>
-<volume status="in-use" displayDescription="Volume Description" availabilityZone="zone1:host1" displayName="Volume Name" volumeType="Backup" snapshotId="None" id="a26887c6-c47b-4654-abb5-dfadf7d3f803" createdAt="2008-12-01T11:01:55" size="100">
+<volume status="in-use" displayDescription="Volume Description" availabilityZone="zone1:host1" displayName="Volume Name" volumeType="Backup" snapshotId="None" id="a26887c6-c47b-4654-abb5-dfadf7d3f803" createdAt="2008-12-01 11:01:55" size="100">
   <attachments>
     <attachment device="/" serverId="3912f2b4-c5ba-4aec-9165-872876fe202e" id="a26887c6-c47b-4654-abb5-dfadf7d3f803" volumeId="a26887c6-c47b-4654-abb5-dfadf7d3f803"/>
   </attachments>
   <metadata/>
-</volume>
\ No newline at end of file
+</volume>
diff --git a/doc/api_samples/os-volumes/os-volumes-index-resp.xml b/doc/api_samples/os-volumes/os-volumes-index-resp.xml
index b849c2d2ea..c6ff8c23e7 100644
--- a/doc/api_samples/os-volumes/os-volumes-index-resp.xml
+++ b/doc/api_samples/os-volumes/os-volumes-index-resp.xml
@@ -1,9 +1,9 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <volumes>
-  <volume status="in-use" displayDescription="Volume Description" availabilityZone="zone1:host1" displayName="Volume Name" volumeType="Backup" snapshotId="None" id="a26887c6-c47b-4654-abb5-dfadf7d3f803" createdAt="2008-12-01T11:01:55" size="100">
+  <volume status="in-use" displayDescription="Volume Description" availabilityZone="zone1:host1" displayName="Volume Name" volumeType="Backup" snapshotId="None" id="a26887c6-c47b-4654-abb5-dfadf7d3f803" createdAt="2008-12-01 11:01:55" size="100">
     <attachments>
       <attachment device="/" serverId="3912f2b4-c5ba-4aec-9165-872876fe202e" id="a26887c6-c47b-4654-abb5-dfadf7d3f803" volumeId="a26887c6-c47b-4654-abb5-dfadf7d3f803"/>
     </attachments>
     <metadata/>
   </volume>
-</volumes>
\ No newline at end of file
+</volumes>
diff --git a/doc/api_samples/os-volumes/os-volumes-post-resp.xml b/doc/api_samples/os-volumes/os-volumes-post-resp.xml
index 1a516d5d2a..a65b78c9de 100644
--- a/doc/api_samples/os-volumes/os-volumes-post-resp.xml
+++ b/doc/api_samples/os-volumes/os-volumes-post-resp.xml
@@ -1,7 +1,7 @@
 <?xml version='1.0' encoding='UTF-8'?>
-<volume status="in-use" displayDescription="Volume Description" availabilityZone="zone1:host1" displayName="Volume Name" volumeType="Backup" snapshotId="None" id="a26887c6-c47b-4654-abb5-dfadf7d3f803" createdAt="2008-12-01T11:01:55" size="100">
+<volume status="in-use" displayDescription="Volume Description" availabilityZone="zone1:host1" displayName="Volume Name" volumeType="Backup" snapshotId="None" id="a26887c6-c47b-4654-abb5-dfadf7d3f803" createdAt="2008-12-01 11:01:55" size="100">
   <attachments>
     <attachment device="/" serverId="3912f2b4-c5ba-4aec-9165-872876fe202e" id="a26887c6-c47b-4654-abb5-dfadf7d3f803" volumeId="a26887c6-c47b-4654-abb5-dfadf7d3f803"/>
   </attachments>
   <metadata/>
-</volume>
\ No newline at end of file
+</volume>
diff --git a/nova/tests/integrated/api_samples/OS-SRV-USG/server-get-resp.xml.tpl b/nova/tests/integrated/api_samples/OS-SRV-USG/server-get-resp.xml.tpl
index 3950b6918b..ee35f36fa0 100644
--- a/nova/tests/integrated/api_samples/OS-SRV-USG/server-get-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/OS-SRV-USG/server-get-resp.xml.tpl
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='UTF-8'?>
-<server xmlns:OS-SRV-USG="http://docs.openstack.org/compute/ext/server_usage/api/v1.1" xmlns:atom="http://www.w3.org/2005/Atom" xmlns="http://docs.openstack.org/compute/api/v1.1" status="ACTIVE" updated="%(isotime)s" hostId="%(hostid)s" name="new-server-test" created="%(isotime)s" userId="fake" tenantId="openstack" accessIPv4="" accessIPv6="" progress="0" id="%(id)s" OS-SRV-USG:terminated_at="None" OS-SRV-USG:launched_at="%(timestamp)s">
+<server xmlns:OS-SRV-USG="http://docs.openstack.org/compute/ext/server_usage/api/v1.1" xmlns:atom="http://www.w3.org/2005/Atom" xmlns="http://docs.openstack.org/compute/api/v1.1" status="ACTIVE" updated="%(isotime)s" hostId="%(hostid)s" name="new-server-test" created="%(isotime)s" userId="fake" tenantId="openstack" accessIPv4="" accessIPv6="" progress="0" id="%(id)s" OS-SRV-USG:terminated_at="None" OS-SRV-USG:launched_at="%(xmltime)s">
   <image id="%(uuid)s">
     <atom:link href="%(host)s/openstack/images/%(uuid)s" rel="bookmark"/>
   </image>
diff --git a/nova/tests/integrated/api_samples/OS-SRV-USG/servers-detail-resp.xml.tpl b/nova/tests/integrated/api_samples/OS-SRV-USG/servers-detail-resp.xml.tpl
index 8869b45458..bce5e2eabe 100644
--- a/nova/tests/integrated/api_samples/OS-SRV-USG/servers-detail-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/OS-SRV-USG/servers-detail-resp.xml.tpl
@@ -1,6 +1,6 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <servers xmlns:OS-SRV-USG="http://docs.openstack.org/compute/ext/server_usage/api/v1.1" xmlns:atom="http://www.w3.org/2005/Atom" xmlns="http://docs.openstack.org/compute/api/v1.1">
-  <server xmlns:OS-SRV-USG="http://docs.openstack.org/compute/ext/server_usage/api/v1.1" xmlns:atom="http://www.w3.org/2005/Atom" xmlns="http://docs.openstack.org/compute/api/v1.1" status="ACTIVE" updated="%(isotime)s" hostId="%(hostid)s" name="new-server-test" created="%(isotime)s" userId="fake" tenantId="openstack" accessIPv4="" accessIPv6="" progress="0" id="%(id)s" OS-SRV-USG:launched_at="%(timestamp)s" OS-SRV-USG:terminated_at="None" >
+  <server xmlns:OS-SRV-USG="http://docs.openstack.org/compute/ext/server_usage/api/v1.1" xmlns:atom="http://www.w3.org/2005/Atom" xmlns="http://docs.openstack.org/compute/api/v1.1" status="ACTIVE" updated="%(isotime)s" hostId="%(hostid)s" name="new-server-test" created="%(isotime)s" userId="fake" tenantId="openstack" accessIPv4="" accessIPv6="" progress="0" id="%(id)s" OS-SRV-USG:launched_at="%(xmltime)s" OS-SRV-USG:terminated_at="None" >
     <image id="%(uuid)s">
       <atom:link href="%(host)s/openstack/images/%(uuid)s" rel="bookmark"/>
     </image>
diff --git a/nova/tests/integrated/api_samples/all_extensions/server-get-resp.xml.tpl b/nova/tests/integrated/api_samples/all_extensions/server-get-resp.xml.tpl
index daa0bcf7ec..1bd75a99b9 100644
--- a/nova/tests/integrated/api_samples/all_extensions/server-get-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/all_extensions/server-get-resp.xml.tpl
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='UTF-8'?>
-<server xmlns:OS-DCF="http://docs.openstack.org/compute/ext/disk_config/api/v1.1" xmlns:OS-EXT-AZ="http://docs.openstack.org/compute/ext/extended_availability_zone/api/v2" xmlns:OS-EXT-SRV-ATTR="http://docs.openstack.org/compute/ext/extended_status/api/v1.1" xmlns:OS-EXT-IPS="http://docs.openstack.org/compute/ext/extended_ips/api/v1.1" xmlns:OS-EXT-IPS-MAC="http://docs.openstack.org/compute/ext/extended_ips_mac/api/v1.1" xmlns:OS-EXT-STS="http://docs.openstack.org/compute/ext/extended_status/api/v1.1" xmlns:os-extended-volumes="http://docs.openstack.org/compute/ext/extended_volumes/api/v1.1" xmlns:OS-SRV-USG="http://docs.openstack.org/compute/ext/server_usage/api/v1.1" xmlns:atom="http://www.w3.org/2005/Atom" xmlns="http://docs.openstack.org/compute/api/v1.1" status="ACTIVE" updated="%(isotime)s" hostId="%(hostid)s" name="new-server-test" created="%(isotime)s" userId="fake" tenantId="openstack" accessIPv4="" accessIPv6="" progress="0" id="%(id)s" key_name="None" config_drive="" OS-EXT-SRV-ATTR:vm_state="active" OS-EXT-SRV-ATTR:task_state="None" OS-EXT-SRV-ATTR:power_state="1" OS-EXT-SRV-ATTR:instance_name="instance-00000001" OS-EXT-SRV-ATTR:host="%(compute_host)s" OS-EXT-SRV-ATTR:hypervisor_hostname="%(hypervisor_hostname)s" OS-EXT-AZ:availability_zone="nova" OS-DCF:diskConfig="AUTO" OS-SRV-USG:launched_at="%(timestamp)s" OS-SRV-USG:terminated_at="None">
+<server xmlns:OS-DCF="http://docs.openstack.org/compute/ext/disk_config/api/v1.1" xmlns:OS-EXT-AZ="http://docs.openstack.org/compute/ext/extended_availability_zone/api/v2" xmlns:OS-EXT-SRV-ATTR="http://docs.openstack.org/compute/ext/extended_status/api/v1.1" xmlns:OS-EXT-IPS="http://docs.openstack.org/compute/ext/extended_ips/api/v1.1" xmlns:OS-EXT-IPS-MAC="http://docs.openstack.org/compute/ext/extended_ips_mac/api/v1.1" xmlns:OS-EXT-STS="http://docs.openstack.org/compute/ext/extended_status/api/v1.1" xmlns:os-extended-volumes="http://docs.openstack.org/compute/ext/extended_volumes/api/v1.1" xmlns:OS-SRV-USG="http://docs.openstack.org/compute/ext/server_usage/api/v1.1" xmlns:atom="http://www.w3.org/2005/Atom" xmlns="http://docs.openstack.org/compute/api/v1.1" status="ACTIVE" updated="%(isotime)s" hostId="%(hostid)s" name="new-server-test" created="%(isotime)s" userId="fake" tenantId="openstack" accessIPv4="" accessIPv6="" progress="0" id="%(id)s" key_name="None" config_drive="" OS-EXT-SRV-ATTR:vm_state="active" OS-EXT-SRV-ATTR:task_state="None" OS-EXT-SRV-ATTR:power_state="1" OS-EXT-SRV-ATTR:instance_name="instance-00000001" OS-EXT-SRV-ATTR:host="%(compute_host)s" OS-EXT-SRV-ATTR:hypervisor_hostname="%(hypervisor_hostname)s" OS-EXT-AZ:availability_zone="nova" OS-DCF:diskConfig="AUTO" OS-SRV-USG:launched_at="%(xmltime)s" OS-SRV-USG:terminated_at="None">
   <image id="%(uuid)s">
     <atom:link href="%(host)s/openstack/images/%(uuid)s" rel="bookmark"/>
   </image>
diff --git a/nova/tests/integrated/api_samples/all_extensions/servers-details-resp.xml.tpl b/nova/tests/integrated/api_samples/all_extensions/servers-details-resp.xml.tpl
index f8482431c9..bf8dc083cd 100644
--- a/nova/tests/integrated/api_samples/all_extensions/servers-details-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/all_extensions/servers-details-resp.xml.tpl
@@ -1,6 +1,6 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <servers xmlns:OS-DCF="http://docs.openstack.org/compute/ext/disk_config/api/v1.1" xmlns:OS-EXT-AZ="http://docs.openstack.org/compute/ext/extended_availability_zone/api/v2" xmlns:OS-EXT-SRV-ATTR="http://docs.openstack.org/compute/ext/extended_status/api/v1.1" xmlns:OS-EXT-IPS="http://docs.openstack.org/compute/ext/extended_ips/api/v1.1" xmlns:OS-EXT-IPS-MAC="http://docs.openstack.org/compute/ext/extended_ips_mac/api/v1.1" xmlns:OS-EXT-STS="http://docs.openstack.org/compute/ext/extended_status/api/v1.1" xmlns:os-extended-volumes="http://docs.openstack.org/compute/ext/extended_volumes/api/v1.1" xmlns:OS-SRV-USG="http://docs.openstack.org/compute/ext/server_usage/api/v1.1" xmlns:atom="http://www.w3.org/2005/Atom" xmlns="http://docs.openstack.org/compute/api/v1.1">
-  <server xmlns:OS-DCF="http://docs.openstack.org/compute/ext/disk_config/api/v1.1" xmlns:OS-EXT-AZ="http://docs.openstack.org/compute/ext/extended_availability_zone/api/v2" xmlns:OS-EXT-SRV-ATTR="http://docs.openstack.org/compute/ext/extended_status/api/v1.1"  xmlns:OS-EXT-IPS="http://docs.openstack.org/compute/ext/extended_ips/api/v1.1" xmlns:OS-EXT-STS="http://docs.openstack.org/compute/ext/extended_status/api/v1.1" xmlns:os-extended-volumes="http://docs.openstack.org/compute/ext/extended_volumes/api/v1.1" xmlns:atom="http://www.w3.org/2005/Atom" xmlns="http://docs.openstack.org/compute/api/v1.1" status="ACTIVE" updated="%(isotime)s" hostId="%(hostid)s" name="new-server-test" created="%(isotime)s" userId="fake" tenantId="openstack" accessIPv4="" accessIPv6="" progress="0" id="%(id)s" key_name="None" config_drive="" OS-EXT-SRV-ATTR:vm_state="active" OS-EXT-SRV-ATTR:task_state="None" OS-EXT-SRV-ATTR:power_state="1" OS-EXT-SRV-ATTR:instance_name="instance-00000001" OS-EXT-SRV-ATTR:host="%(compute_host)s" OS-EXT-SRV-ATTR:hypervisor_hostname="%(hypervisor_hostname)s" OS-EXT-AZ:availability_zone="nova" OS-DCF:diskConfig="AUTO" OS-SRV-USG:launched_at="%(timestamp)s" OS-SRV-USG:terminated_at="None">
+  <server xmlns:OS-DCF="http://docs.openstack.org/compute/ext/disk_config/api/v1.1" xmlns:OS-EXT-AZ="http://docs.openstack.org/compute/ext/extended_availability_zone/api/v2" xmlns:OS-EXT-SRV-ATTR="http://docs.openstack.org/compute/ext/extended_status/api/v1.1"  xmlns:OS-EXT-IPS="http://docs.openstack.org/compute/ext/extended_ips/api/v1.1" xmlns:OS-EXT-STS="http://docs.openstack.org/compute/ext/extended_status/api/v1.1" xmlns:os-extended-volumes="http://docs.openstack.org/compute/ext/extended_volumes/api/v1.1" xmlns:atom="http://www.w3.org/2005/Atom" xmlns="http://docs.openstack.org/compute/api/v1.1" status="ACTIVE" updated="%(isotime)s" hostId="%(hostid)s" name="new-server-test" created="%(isotime)s" userId="fake" tenantId="openstack" accessIPv4="" accessIPv6="" progress="0" id="%(id)s" key_name="None" config_drive="" OS-EXT-SRV-ATTR:vm_state="active" OS-EXT-SRV-ATTR:task_state="None" OS-EXT-SRV-ATTR:power_state="1" OS-EXT-SRV-ATTR:instance_name="instance-00000001" OS-EXT-SRV-ATTR:host="%(compute_host)s" OS-EXT-SRV-ATTR:hypervisor_hostname="%(hypervisor_hostname)s" OS-EXT-AZ:availability_zone="nova" OS-DCF:diskConfig="AUTO" OS-SRV-USG:launched_at="%(xmltime)s" OS-SRV-USG:terminated_at="None">
     <image id="%(uuid)s">
       <atom:link href="%(host)s/openstack/images/%(uuid)s" rel="bookmark"/>
     </image>
diff --git a/nova/tests/integrated/api_samples/os-aggregates/aggregate-post-resp.xml.tpl b/nova/tests/integrated/api_samples/os-aggregates/aggregate-post-resp.xml.tpl
index f8603ac33f..2a1bee5868 100644
--- a/nova/tests/integrated/api_samples/os-aggregates/aggregate-post-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-aggregates/aggregate-post-resp.xml.tpl
@@ -3,7 +3,7 @@
   <name>name</name>
   <availability_zone>nova</availability_zone>
   <deleted>False</deleted>
-  <created_at>%(timestamp)s</created_at>
+  <created_at>%(xmltime)s</created_at>
   <updated_at>None</updated_at>
   <deleted_at>None</deleted_at>
   <id>%(aggregate_id)s</id>
diff --git a/nova/tests/integrated/api_samples/os-aggregates/aggregate-update-post-resp.xml.tpl b/nova/tests/integrated/api_samples/os-aggregates/aggregate-update-post-resp.xml.tpl
index 071e1c43a6..1ff22bc0e0 100644
--- a/nova/tests/integrated/api_samples/os-aggregates/aggregate-update-post-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-aggregates/aggregate-update-post-resp.xml.tpl
@@ -3,8 +3,8 @@
   <name>newname</name>
   <availability_zone>nova2</availability_zone>
   <deleted>False</deleted>
-  <created_at>%(timestamp)s</created_at>
-  <updated_at>%(timestamp)s</updated_at>
+  <created_at>%(xmltime)s</created_at>
+  <updated_at>%(xmltime)s</updated_at>
   <hosts/>
   <deleted_at>None</deleted_at>
   <id>1</id>
diff --git a/nova/tests/integrated/api_samples/os-aggregates/aggregates-add-host-post-resp.xml.tpl b/nova/tests/integrated/api_samples/os-aggregates/aggregates-add-host-post-resp.xml.tpl
index a45a017894..7412dee66d 100644
--- a/nova/tests/integrated/api_samples/os-aggregates/aggregates-add-host-post-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-aggregates/aggregates-add-host-post-resp.xml.tpl
@@ -3,7 +3,7 @@
   <name>name</name>
   <availability_zone>nova</availability_zone>
   <deleted>False</deleted>
-  <created_at>%(timestamp)s</created_at>
+  <created_at>%(xmltime)s</created_at>
   <updated_at>None</updated_at>
   <hosts>
     <host>%(compute_host)s</host>
diff --git a/nova/tests/integrated/api_samples/os-aggregates/aggregates-get-resp.xml.tpl b/nova/tests/integrated/api_samples/os-aggregates/aggregates-get-resp.xml.tpl
index d59d10a842..7f44a231cb 100644
--- a/nova/tests/integrated/api_samples/os-aggregates/aggregates-get-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-aggregates/aggregates-get-resp.xml.tpl
@@ -3,7 +3,7 @@
   <name>name</name>
   <availability_zone>nova</availability_zone>
   <deleted>False</deleted>
-  <created_at>%(timestamp)s</created_at>
+  <created_at>%(xmltime)s</created_at>
   <updated_at>None</updated_at>
   <hosts/>
   <deleted_at>None</deleted_at>
diff --git a/nova/tests/integrated/api_samples/os-aggregates/aggregates-list-get-resp.xml.tpl b/nova/tests/integrated/api_samples/os-aggregates/aggregates-list-get-resp.xml.tpl
index 0a6173a0ba..79af4a8d89 100644
--- a/nova/tests/integrated/api_samples/os-aggregates/aggregates-list-get-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-aggregates/aggregates-list-get-resp.xml.tpl
@@ -4,7 +4,7 @@
     <name>name</name>
     <availability_zone>nova</availability_zone>
     <deleted>False</deleted>
-    <created_at>%(timestamp)s</created_at>
+    <created_at>%(xmltime)s</created_at>
     <updated_at>None</updated_at>
     <hosts/>
     <deleted_at>None</deleted_at>
diff --git a/nova/tests/integrated/api_samples/os-aggregates/aggregates-metadata-post-resp.xml.tpl b/nova/tests/integrated/api_samples/os-aggregates/aggregates-metadata-post-resp.xml.tpl
index 5b229cfc9e..01245a4dbb 100644
--- a/nova/tests/integrated/api_samples/os-aggregates/aggregates-metadata-post-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-aggregates/aggregates-metadata-post-resp.xml.tpl
@@ -3,7 +3,7 @@
   <name>name</name>
   <availability_zone>nova</availability_zone>
   <deleted>False</deleted>
-  <created_at>%(timestamp)s</created_at>
+  <created_at>%(xmltime)s</created_at>
   <updated_at>None</updated_at>
   <hosts/>
   <deleted_at>None</deleted_at>
diff --git a/nova/tests/integrated/api_samples/os-aggregates/aggregates-remove-host-post-resp.xml.tpl b/nova/tests/integrated/api_samples/os-aggregates/aggregates-remove-host-post-resp.xml.tpl
index d59d10a842..7f44a231cb 100644
--- a/nova/tests/integrated/api_samples/os-aggregates/aggregates-remove-host-post-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-aggregates/aggregates-remove-host-post-resp.xml.tpl
@@ -3,7 +3,7 @@
   <name>name</name>
   <availability_zone>nova</availability_zone>
   <deleted>False</deleted>
-  <created_at>%(timestamp)s</created_at>
+  <created_at>%(xmltime)s</created_at>
   <updated_at>None</updated_at>
   <hosts/>
   <deleted_at>None</deleted_at>
diff --git a/nova/tests/integrated/api_samples/os-extended-services-delete/services-get-resp.xml.tpl b/nova/tests/integrated/api_samples/os-extended-services-delete/services-get-resp.xml.tpl
index 1b1a3cf74c..8e87af9173 100644
--- a/nova/tests/integrated/api_samples/os-extended-services-delete/services-get-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-extended-services-delete/services-get-resp.xml.tpl
@@ -1,7 +1,7 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <services>
-  <service status="disabled" binary="nova-scheduler" zone="internal" state="up" updated_at="%(timestamp)s" host="host1" id="1"/>
-  <service status="disabled" binary="nova-compute" zone="nova" state="up" updated_at="%(timestamp)s" host="host1" id="2"/>
-  <service status="enabled" binary="nova-scheduler" zone="internal" state="down" updated_at="%(timestamp)s" host="host2" id="3"/>
-  <service status="disabled" binary="nova-compute" zone="nova" state="down" updated_at="%(timestamp)s" host="host2" id="4"/>
+  <service status="disabled" binary="nova-scheduler" zone="internal" state="up" updated_at="%(xmltime)s" host="host1" id="1"/>
+  <service status="disabled" binary="nova-compute" zone="nova" state="up" updated_at="%(xmltime)s" host="host1" id="2"/>
+  <service status="enabled" binary="nova-scheduler" zone="internal" state="down" updated_at="%(xmltime)s" host="host2" id="3"/>
+  <service status="disabled" binary="nova-compute" zone="nova" state="down" updated_at="%(xmltime)s" host="host2" id="4"/>
 </services>
diff --git a/nova/tests/integrated/api_samples/os-instance-actions/instance-action-get-resp.xml.tpl b/nova/tests/integrated/api_samples/os-instance-actions/instance-action-get-resp.xml.tpl
index 6cd44bfc45..61c0ac8c76 100644
--- a/nova/tests/integrated/api_samples/os-instance-actions/instance-action-get-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-instance-actions/instance-action-get-resp.xml.tpl
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='UTF-8'?>
-<instanceAction action="%(action)s" instance_uuid="%(instance_uuid)s" request_id="%(request_id)s" user_id="%(integer_id)s" project_id="%(integer_id)s" start_time="%(timestamp)s" message="">
-    <events event="%(event)s" start_time="%(timestamp)s" finish_time="%(timestamp)s" result="%(result)s" traceback=""/>
-    <events event="%(event)s" start_time="%(timestamp)s" finish_time="%(timestamp)s" result="%(result)s" traceback=""/>
+<instanceAction action="%(action)s" instance_uuid="%(instance_uuid)s" request_id="%(request_id)s" user_id="%(integer_id)s" project_id="%(integer_id)s" start_time="%(xmltime)s" message="">
+    <events event="%(event)s" start_time="%(xmltime)s" finish_time="%(xmltime)s" result="%(result)s" traceback=""/>
+    <events event="%(event)s" start_time="%(xmltime)s" finish_time="%(xmltime)s" result="%(result)s" traceback=""/>
 </instanceAction>
diff --git a/nova/tests/integrated/api_samples/os-instance-actions/instance-actions-list-resp.xml.tpl b/nova/tests/integrated/api_samples/os-instance-actions/instance-actions-list-resp.xml.tpl
index 943b1ba747..87a8726cce 100644
--- a/nova/tests/integrated/api_samples/os-instance-actions/instance-actions-list-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-instance-actions/instance-actions-list-resp.xml.tpl
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <instanceActions>
-    <instanceAction action="%(action)s" instance_uuid="%(uuid)s" request_id="%(request_id)s" user_id="%(integer_id)s" project_id="%(integer_id)s" start_time="%(timestamp)s" message=""/>
-    <instanceAction action="%(action)s" instance_uuid="%(uuid)s" request_id="%(request_id)s" user_id="%(integer_id)s" project_id="%(integer_id)s" start_time="%(timestamp)s" message=""/>
+    <instanceAction action="%(action)s" instance_uuid="%(uuid)s" request_id="%(request_id)s" user_id="%(integer_id)s" project_id="%(integer_id)s" start_time="%(xmltime)s" message=""/>
+    <instanceAction action="%(action)s" instance_uuid="%(uuid)s" request_id="%(request_id)s" user_id="%(integer_id)s" project_id="%(integer_id)s" start_time="%(xmltime)s" message=""/>
 </instanceActions>
diff --git a/nova/tests/integrated/api_samples/os-instance_usage_audit_log/inst-usage-audit-log-index-get-resp.json.tpl b/nova/tests/integrated/api_samples/os-instance_usage_audit_log/inst-usage-audit-log-index-get-resp.json.tpl
index 6974f360fc..81b0d6c341 100644
--- a/nova/tests/integrated/api_samples/os-instance_usage_audit_log/inst-usage-audit-log-index-get-resp.json.tpl
+++ b/nova/tests/integrated/api_samples/os-instance_usage_audit_log/inst-usage-audit-log-index-get-resp.json.tpl
@@ -9,8 +9,8 @@
         "num_hosts_not_run": 1,
         "num_hosts_running": 0,
         "overall_status": "0 of 1 hosts done. 0 errors.",
-        "period_beginning": "%(timestamp)s",
-        "period_ending": "%(timestamp)s",
+        "period_beginning": "%(xmltime)s",
+        "period_ending": "%(xmltime)s",
         "total_errors": 0,
         "total_instances": 0
     }
diff --git a/nova/tests/integrated/api_samples/os-instance_usage_audit_log/inst-usage-audit-log-index-get-resp.xml.tpl b/nova/tests/integrated/api_samples/os-instance_usage_audit_log/inst-usage-audit-log-index-get-resp.xml.tpl
index 4eafa8b4aa..8b670b0c91 100644
--- a/nova/tests/integrated/api_samples/os-instance_usage_audit_log/inst-usage-audit-log-index-get-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-instance_usage_audit_log/inst-usage-audit-log-index-get-resp.xml.tpl
@@ -10,7 +10,7 @@
     <item>%(hostid)s</item>
   </hosts_not_run>
   <overall_status>0 of 1 hosts done. 0 errors.</overall_status>
-  <period_ending>%(timestamp)s</period_ending>
-  <period_beginning>%(timestamp)s</period_beginning>
+  <period_ending>%(xmltime)s</period_ending>
+  <period_beginning>%(xmltime)s</period_beginning>
   <num_hosts>1</num_hosts>
 </instance_usage_audit_logs>
diff --git a/nova/tests/integrated/api_samples/os-instance_usage_audit_log/inst-usage-audit-log-show-get-resp.json.tpl b/nova/tests/integrated/api_samples/os-instance_usage_audit_log/inst-usage-audit-log-show-get-resp.json.tpl
index eda9523047..71549c156b 100644
--- a/nova/tests/integrated/api_samples/os-instance_usage_audit_log/inst-usage-audit-log-show-get-resp.json.tpl
+++ b/nova/tests/integrated/api_samples/os-instance_usage_audit_log/inst-usage-audit-log-show-get-resp.json.tpl
@@ -9,8 +9,8 @@
         "num_hosts_not_run": 1,
         "num_hosts_running": 0,
         "overall_status": "0 of 1 hosts done. 0 errors.",
-        "period_beginning": "%(timestamp)s",
-        "period_ending": "%(timestamp)s",
+        "period_beginning": "%(xmltime)s",
+        "period_ending": "%(xmltime)s",
         "total_errors": 0,
         "total_instances": 0
     }
diff --git a/nova/tests/integrated/api_samples/os-instance_usage_audit_log/inst-usage-audit-log-show-get-resp.xml.tpl b/nova/tests/integrated/api_samples/os-instance_usage_audit_log/inst-usage-audit-log-show-get-resp.xml.tpl
index 1ef243292a..9ceb1c26c8 100644
--- a/nova/tests/integrated/api_samples/os-instance_usage_audit_log/inst-usage-audit-log-show-get-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-instance_usage_audit_log/inst-usage-audit-log-show-get-resp.xml.tpl
@@ -10,7 +10,7 @@
     <item>%(hostid)s</item>
   </hosts_not_run>
   <overall_status>0 of 1 hosts done. 0 errors.</overall_status>
-  <period_ending>%(timestamp)s</period_ending>
-  <period_beginning>%(timestamp)s</period_beginning>
+  <period_ending>%(xmltime)s</period_ending>
+  <period_beginning>%(xmltime)s</period_beginning>
   <num_hosts>1</num_hosts>
 </instance_usage_audit_log>
diff --git a/nova/tests/integrated/api_samples/os-keypairs/keypairs-get-resp.json.tpl b/nova/tests/integrated/api_samples/os-keypairs/keypairs-get-resp.json.tpl
index 3a188cfc81..4fde60f14b 100644
--- a/nova/tests/integrated/api_samples/os-keypairs/keypairs-get-resp.json.tpl
+++ b/nova/tests/integrated/api_samples/os-keypairs/keypairs-get-resp.json.tpl
@@ -5,7 +5,7 @@
         "fingerprint": "%(fingerprint)s",
         "user_id": "fake",
         "deleted": false,
-        "created_at": "%(timestamp)s",
+        "created_at": "%(strtime)s",
         "updated_at": null,
         "deleted_at": null,
         "id": 1
diff --git a/nova/tests/integrated/api_samples/os-keypairs/keypairs-get-resp.xml.tpl b/nova/tests/integrated/api_samples/os-keypairs/keypairs-get-resp.xml.tpl
index bdaebc47d6..3442f1ed62 100644
--- a/nova/tests/integrated/api_samples/os-keypairs/keypairs-get-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-keypairs/keypairs-get-resp.xml.tpl
@@ -6,7 +6,7 @@
     <fingerprint>%(fingerprint)s</fingerprint>
     <user_id>fake</user_id>
     <deleted>False</deleted>
-    <created_at>%(timestamp)s</created_at>
+    <created_at>%(xmltime)s</created_at>
     <updated_at>None</updated_at>
     <deleted_at>None</deleted_at>
     <id>1</id>
diff --git a/nova/tests/integrated/api_samples/os-networks/network-show-resp.xml.tpl b/nova/tests/integrated/api_samples/os-networks/network-show-resp.xml.tpl
index 7989f47e4b..aeab222391 100644
--- a/nova/tests/integrated/api_samples/os-networks/network-show-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-networks/network-show-resp.xml.tpl
@@ -4,7 +4,7 @@
     <vpn_public_port>1000</vpn_public_port>
     <dhcp_start>%(ip)s</dhcp_start>
     <bridge_interface>eth0</bridge_interface>
-    <updated_at>%(timestamp)s</updated_at>
+    <updated_at>%(xmltime)s</updated_at>
     <id>%(id)s</id>
     <cidr_v6>None</cidr_v6>
     <deleted_at>None</deleted_at>
@@ -23,7 +23,7 @@
     <vpn_public_address>%(ip)s</vpn_public_address>
     <multi_host>False</multi_host>
     <dns2>None</dns2>
-    <created_at>%(timestamp)s</created_at>
+    <created_at>%(xmltime)s</created_at>
     <host>nsokolov-desktop</host>
     <gateway_v6>None</gateway_v6>
     <netmask_v6>None</netmask_v6>
diff --git a/nova/tests/integrated/api_samples/os-networks/networks-list-resp.xml.tpl b/nova/tests/integrated/api_samples/os-networks/networks-list-resp.xml.tpl
index c01c083378..7ac19a8137 100644
--- a/nova/tests/integrated/api_samples/os-networks/networks-list-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-networks/networks-list-resp.xml.tpl
@@ -5,7 +5,7 @@
         <vpn_public_port>1000</vpn_public_port>
         <dhcp_start>%(ip)s</dhcp_start>
         <bridge_interface>eth0</bridge_interface>
-        <updated_at>%(timestamp)s</updated_at>
+        <updated_at>%(xmltime)s</updated_at>
         <id>%(id)s</id>
         <cidr_v6>None</cidr_v6>
         <deleted_at>None</deleted_at>
@@ -24,7 +24,7 @@
         <vpn_public_address>%(ip)s</vpn_public_address>
         <multi_host>False</multi_host>
         <dns2>None</dns2>
-        <created_at>%(timestamp)s</created_at>
+        <created_at>%(xmltime)s</created_at>
         <host>nsokolov-desktop</host>
         <gateway_v6>None</gateway_v6>
         <netmask_v6>None</netmask_v6>
@@ -54,7 +54,7 @@
         <vpn_public_address>None</vpn_public_address>
         <multi_host>False</multi_host>
         <dns2>None</dns2>
-        <created_at>%(timestamp)s</created_at>
+        <created_at>%(xmltime)s</created_at>
         <host>None</host>
         <gateway_v6>None</gateway_v6>
         <netmask_v6>None</netmask_v6>
diff --git a/nova/tests/integrated/api_samples/os-services/services-get-resp.xml.tpl b/nova/tests/integrated/api_samples/os-services/services-get-resp.xml.tpl
index 53f8541ad6..ed8bb14dfc 100644
--- a/nova/tests/integrated/api_samples/os-services/services-get-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-services/services-get-resp.xml.tpl
@@ -1,7 +1,7 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <services>
-  <service status="disabled" binary="nova-scheduler" zone="internal" state="up" updated_at="%(timestamp)s" host="host1" disabled_reason="test1"/>
-  <service status="disabled" binary="nova-compute" zone="nova" state="up" updated_at="%(timestamp)s" host="host1" disabled_reason="test2"/>
-  <service status="enabled" binary="nova-scheduler" zone="internal" state="down" updated_at="%(timestamp)s" host="host2" disabled_reason=""/>
-  <service status="disabled" binary="nova-compute" zone="nova" state="down" updated_at="%(timestamp)s" host="host2" disabled_reason="test4"/>
+  <service status="disabled" binary="nova-scheduler" zone="internal" state="up" updated_at="%(xmltime)s" host="host1" disabled_reason="test1"/>
+  <service status="disabled" binary="nova-compute" zone="nova" state="up" updated_at="%(xmltime)s" host="host1" disabled_reason="test2"/>
+  <service status="enabled" binary="nova-scheduler" zone="internal" state="down" updated_at="%(xmltime)s" host="host2" disabled_reason=""/>
+  <service status="disabled" binary="nova-compute" zone="nova" state="down" updated_at="%(xmltime)s" host="host2" disabled_reason="test4"/>
 </services>
diff --git a/nova/tests/integrated/api_samples/os-services/services-list-get-resp.xml.tpl b/nova/tests/integrated/api_samples/os-services/services-list-get-resp.xml.tpl
index e708aa78d2..1c6b0113b7 100644
--- a/nova/tests/integrated/api_samples/os-services/services-list-get-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-services/services-list-get-resp.xml.tpl
@@ -1,6 +1,6 @@
 <services>
-    <service status="disabled" binary="nova-scheduler" zone="internal" state="up" host="host1" updated_at="%(timestamp)s"/>
-    <service status="disabled" binary="nova-compute" zone="nova" state="up" host="host1" updated_at="%(timestamp)s" />
-    <service status="enabled" binary="nova-scheduler" zone="internal" state="down" host="host2" updated_at="%(timestamp)s"/>
-    <service status="disabled" binary="nova-compute" zone="nova" state="down" host="host2" updated_at="%(timestamp)s"/>
+    <service status="disabled" binary="nova-scheduler" zone="internal" state="up" host="host1" updated_at="%(xmltime)s"/>
+    <service status="disabled" binary="nova-compute" zone="nova" state="up" host="host1" updated_at="%(xmltime)s" />
+    <service status="enabled" binary="nova-scheduler" zone="internal" state="down" host="host2" updated_at="%(xmltime)s"/>
+    <service status="disabled" binary="nova-compute" zone="nova" state="down" host="host2" updated_at="%(xmltime)s"/>
 </services>
diff --git a/nova/tests/integrated/api_samples/os-simple-tenant-usage/simple-tenant-usage-get-specific.xml.tpl b/nova/tests/integrated/api_samples/os-simple-tenant-usage/simple-tenant-usage-get-specific.xml.tpl
index 4a68823079..014c2f9d64 100644
--- a/nova/tests/integrated/api_samples/os-simple-tenant-usage/simple-tenant-usage-get-specific.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-simple-tenant-usage/simple-tenant-usage-get-specific.xml.tpl
@@ -5,8 +5,8 @@
   <total_vcpus_usage>1.0</total_vcpus_usage>
   <total_memory_mb_usage>512.0</total_memory_mb_usage>
   <total_hours>1.0</total_hours>
-  <start>%(timestamp)s</start>
-  <stop>%(timestamp)s</stop>
+  <start>%(xmltime)s</start>
+  <stop>%(xmltime)s</stop>
   <server_usages>
     <server_usage>
       <instance_id>%(uuid)s</instance_id>
@@ -17,7 +17,7 @@
       <vcpus>1</vcpus>
       <tenant_id>openstack</tenant_id>
       <flavor>m1.tiny</flavor>
-      <started_at>%(timestamp)s</started_at>
+      <started_at>%(xmltime)s</started_at>
       <ended_at>None</ended_at>
       <state>active</state>
       <uptime>3600</uptime>
diff --git a/nova/tests/integrated/api_samples/os-simple-tenant-usage/simple-tenant-usage-get.xml.tpl b/nova/tests/integrated/api_samples/os-simple-tenant-usage/simple-tenant-usage-get.xml.tpl
index 4a2833da83..b1bb63f1c4 100644
--- a/nova/tests/integrated/api_samples/os-simple-tenant-usage/simple-tenant-usage-get.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-simple-tenant-usage/simple-tenant-usage-get.xml.tpl
@@ -6,8 +6,8 @@
     <total_vcpus_usage>1.0</total_vcpus_usage>
     <total_memory_mb_usage>512.0</total_memory_mb_usage>
     <total_hours>1.0</total_hours>
-    <start>%(timestamp)s</start>
-    <stop>%(timestamp)s</stop>
+    <start>%(xmltime)s</start>
+    <stop>%(xmltime)s</stop>
     <server_usages/>
   </tenant_usage>
 </tenant_usages>
diff --git a/nova/tests/integrated/api_samples/os-volumes/os-volumes-detail-resp.xml.tpl b/nova/tests/integrated/api_samples/os-volumes/os-volumes-detail-resp.xml.tpl
index 7410bed49e..bd8f324ee0 100644
--- a/nova/tests/integrated/api_samples/os-volumes/os-volumes-detail-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-volumes/os-volumes-detail-resp.xml.tpl
@@ -1,6 +1,6 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <volumes>
-  <volume status="in-use" displayDescription="%(volume_desc)s" availabilityZone="zone1:host1" displayName="%(volume_name)s" volumeType="Backup" snapshotId="None" id="%(uuid)s" createdAt="%(timestamp)s" size="100">
+  <volume status="in-use" displayDescription="%(volume_desc)s" availabilityZone="zone1:host1" displayName="%(volume_name)s" volumeType="Backup" snapshotId="None" id="%(uuid)s" createdAt="%(xmltime)s" size="100">
     <attachments>
       <attachment device="/" serverId="%(uuid)s" id="%(uuid)s" volumeId="%(uuid)s"/>
     </attachments>
diff --git a/nova/tests/integrated/api_samples/os-volumes/os-volumes-get-resp.xml.tpl b/nova/tests/integrated/api_samples/os-volumes/os-volumes-get-resp.xml.tpl
index 6503138f08..cb3c5edf90 100644
--- a/nova/tests/integrated/api_samples/os-volumes/os-volumes-get-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-volumes/os-volumes-get-resp.xml.tpl
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='UTF-8'?>
-<volume status="in-use" displayDescription="%(volume_desc)s" availabilityZone="zone1:host1" displayName="%(volume_name)s" volumeType="Backup" snapshotId="None" id="%(uuid)s" createdAt="%(timestamp)s" size="100">
+<volume status="in-use" displayDescription="%(volume_desc)s" availabilityZone="zone1:host1" displayName="%(volume_name)s" volumeType="Backup" snapshotId="None" id="%(uuid)s" createdAt="%(xmltime)s" size="100">
   <attachments>
     <attachment device="/" serverId="%(uuid)s" id="%(uuid)s" volumeId="%(uuid)s"/>
   </attachments>
diff --git a/nova/tests/integrated/api_samples/os-volumes/os-volumes-index-resp.xml.tpl b/nova/tests/integrated/api_samples/os-volumes/os-volumes-index-resp.xml.tpl
index 7410bed49e..bd8f324ee0 100644
--- a/nova/tests/integrated/api_samples/os-volumes/os-volumes-index-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-volumes/os-volumes-index-resp.xml.tpl
@@ -1,6 +1,6 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <volumes>
-  <volume status="in-use" displayDescription="%(volume_desc)s" availabilityZone="zone1:host1" displayName="%(volume_name)s" volumeType="Backup" snapshotId="None" id="%(uuid)s" createdAt="%(timestamp)s" size="100">
+  <volume status="in-use" displayDescription="%(volume_desc)s" availabilityZone="zone1:host1" displayName="%(volume_name)s" volumeType="Backup" snapshotId="None" id="%(uuid)s" createdAt="%(xmltime)s" size="100">
     <attachments>
       <attachment device="/" serverId="%(uuid)s" id="%(uuid)s" volumeId="%(uuid)s"/>
     </attachments>
diff --git a/nova/tests/integrated/api_samples/os-volumes/os-volumes-post-resp.xml.tpl b/nova/tests/integrated/api_samples/os-volumes/os-volumes-post-resp.xml.tpl
index 6503138f08..cb3c5edf90 100644
--- a/nova/tests/integrated/api_samples/os-volumes/os-volumes-post-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-volumes/os-volumes-post-resp.xml.tpl
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='UTF-8'?>
-<volume status="in-use" displayDescription="%(volume_desc)s" availabilityZone="zone1:host1" displayName="%(volume_name)s" volumeType="Backup" snapshotId="None" id="%(uuid)s" createdAt="%(timestamp)s" size="100">
+<volume status="in-use" displayDescription="%(volume_desc)s" availabilityZone="zone1:host1" displayName="%(volume_name)s" volumeType="Backup" snapshotId="None" id="%(uuid)s" createdAt="%(xmltime)s" size="100">
   <attachments>
     <attachment device="/" serverId="%(uuid)s" id="%(uuid)s" volumeId="%(uuid)s"/>
   </attachments>
diff --git a/nova/tests/integrated/api_samples/os-volumes/snapshot-create-resp.xml.tpl b/nova/tests/integrated/api_samples/os-volumes/snapshot-create-resp.xml.tpl
index d75ae7ddd8..78268c822c 100644
--- a/nova/tests/integrated/api_samples/os-volumes/snapshot-create-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-volumes/snapshot-create-resp.xml.tpl
@@ -1,2 +1,2 @@
 <?xml version='1.0' encoding='UTF-8'?>
-<snapshot status="available" displayDescription="%(description)s" displayName="%(snapshot_name)s" volumeId="521752a6-acf6-4b2d-bc7a-119f9148cd8c" id="100" createdAt="%(timestamp)s" size="100"/>
+<snapshot status="available" displayDescription="%(description)s" displayName="%(snapshot_name)s" volumeId="521752a6-acf6-4b2d-bc7a-119f9148cd8c" id="100" createdAt="%(xmltime)s" size="100"/>
diff --git a/nova/tests/integrated/api_samples/os-volumes/snapshots-detail-resp.xml.tpl b/nova/tests/integrated/api_samples/os-volumes/snapshots-detail-resp.xml.tpl
index dbfe32526a..730921f4cf 100644
--- a/nova/tests/integrated/api_samples/os-volumes/snapshots-detail-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-volumes/snapshots-detail-resp.xml.tpl
@@ -1,6 +1,6 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <snapshots>
-  <snapshot status="available" displayDescription="%(text)s" displayName="%(text)s" volumeId="12" id="100" createdAt="%(timestamp)s" size="100"/>
-  <snapshot status="available" displayDescription="%(text)s" displayName="%(text)s" volumeId="12" id="101" createdAt="%(timestamp)s" size="100"/>
-  <snapshot status="available" displayDescription="%(text)s" displayName="%(text)s" volumeId="12" id="102" createdAt="%(timestamp)s" size="100"/>
+  <snapshot status="available" displayDescription="%(text)s" displayName="%(text)s" volumeId="12" id="100" createdAt="%(xmltime)s" size="100"/>
+  <snapshot status="available" displayDescription="%(text)s" displayName="%(text)s" volumeId="12" id="101" createdAt="%(xmltime)s" size="100"/>
+  <snapshot status="available" displayDescription="%(text)s" displayName="%(text)s" volumeId="12" id="102" createdAt="%(xmltime)s" size="100"/>
 </snapshots>
diff --git a/nova/tests/integrated/api_samples/os-volumes/snapshots-list-resp.xml.tpl b/nova/tests/integrated/api_samples/os-volumes/snapshots-list-resp.xml.tpl
index dbfe32526a..730921f4cf 100644
--- a/nova/tests/integrated/api_samples/os-volumes/snapshots-list-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-volumes/snapshots-list-resp.xml.tpl
@@ -1,6 +1,6 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <snapshots>
-  <snapshot status="available" displayDescription="%(text)s" displayName="%(text)s" volumeId="12" id="100" createdAt="%(timestamp)s" size="100"/>
-  <snapshot status="available" displayDescription="%(text)s" displayName="%(text)s" volumeId="12" id="101" createdAt="%(timestamp)s" size="100"/>
-  <snapshot status="available" displayDescription="%(text)s" displayName="%(text)s" volumeId="12" id="102" createdAt="%(timestamp)s" size="100"/>
+  <snapshot status="available" displayDescription="%(text)s" displayName="%(text)s" volumeId="12" id="100" createdAt="%(xmltime)s" size="100"/>
+  <snapshot status="available" displayDescription="%(text)s" displayName="%(text)s" volumeId="12" id="101" createdAt="%(xmltime)s" size="100"/>
+  <snapshot status="available" displayDescription="%(text)s" displayName="%(text)s" volumeId="12" id="102" createdAt="%(xmltime)s" size="100"/>
 </snapshots>
diff --git a/nova/tests/integrated/api_samples/os-volumes/snapshots-show-resp.xml.tpl b/nova/tests/integrated/api_samples/os-volumes/snapshots-show-resp.xml.tpl
index 3525851cfe..c42bf41b3c 100644
--- a/nova/tests/integrated/api_samples/os-volumes/snapshots-show-resp.xml.tpl
+++ b/nova/tests/integrated/api_samples/os-volumes/snapshots-show-resp.xml.tpl
@@ -1,2 +1,2 @@
 <?xml version='1.0' encoding='UTF-8'?>
-<snapshot status="available" displayDescription="%(description)s" displayName="%(snapshot_name)s" volumeId="12" id="100" createdAt="%(timestamp)s" size="100"/>
+<snapshot status="available" displayDescription="%(description)s" displayName="%(snapshot_name)s" volumeId="12" id="100" createdAt="%(xmltime)s" size="100"/>
diff --git a/nova/tests/integrated/api_samples_test_base.py b/nova/tests/integrated/api_samples_test_base.py
index 07d9893c1d..1089e0fbb3 100644
--- a/nova/tests/integrated/api_samples_test_base.py
+++ b/nova/tests/integrated/api_samples_test_base.py
@@ -268,17 +268,14 @@ class ApiSampleTestBase(integrated_helpers._IntegratedTestBase):
             text = r'[^<]*'
         isotime_re = '\d{4}-[0,1]\d-[0-3]\dT\d{2}:\d{2}:\d{2}Z'
         strtime_re = '\d{4}-[0,1]\d-[0-3]\dT\d{2}:\d{2}:\d{2}\.\d{6}'
-        # NOTE(treinish): Could result in a false positive, but it
-        # shouldn't be an issue for this case.
-        timestamp_re = ('\d{4}-[0,1]\d-[0-3]\d[ ,T]'
-                        '\d{2}:\d{2}:\d{2}'
-                        '(Z|(\+|-)\d{2}:\d{2}|\.\d{6}|'
-                        '\.\d{6}(Z|(\+|-)\d{2}:\d{2})|)')
+        xmltime_re = ('\d{4}-[0,1]\d-[0-3]\d '
+                      '\d{2}:\d{2}:\d{2}'
+                      '(\.\d{6})?(\+00:00)?')
         return {
             'isotime': isotime_re,
             'strtime': strtime_re,
             'strtime_or_none': r'None|%s' % strtime_re,
-            'timestamp': timestamp_re,
+            'xmltime': xmltime_re,
             'password': '[0-9a-zA-Z]{1,12}',
             'ip': '[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}',
             'ip6': '([0-9a-zA-Z]{1,4}:){1,7}:?[0-9a-zA-Z]{1,4}',