objects: Remove 'bandwidth' fields from notifications

Finish up removing these entries from the versioned instance
notifications. They're useless since we dropped support for the XenAPI
virt driver. The underlying model is retained for now: that will be
handled separately.

Change-Id: I774c50fca99bc655ca5010e3b9d8247b739293b3
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>

doc/notification_samples/common_payloads/InstanceExistsPayload.json

@@ -1,10 +1,9 @@
 {
     "$ref": "InstancePayload.json",
     "nova_object.data":{
-        "audit_period": {"$ref": "AuditPeriodPayload.json#"},
-        "bandwidth": []
+        "audit_period": {"$ref": "AuditPeriodPayload.json#"}
     },
     "nova_object.name":"InstanceExistsPayload",
     "nova_object.namespace":"nova",
-    "nova_object.version":"1.2"
+    "nova_object.version":"2.0"
 }

doc/notification_samples/common_payloads/InstanceUpdatePayload.json

@@ -10,7 +10,6 @@
             "nova_object.namespace": "nova",
             "nova_object.version": "1.0"
         },
-        "bandwidth": [],
         "block_devices": [],
         "old_display_name": null,
         "state_update": {
@@ -29,5 +28,5 @@
     },
     "nova_object.name": "InstanceUpdatePayload",
     "nova_object.namespace": "nova",
-    "nova_object.version": "1.9"
-}
+    "nova_object.version": "2.0"
+}