Fix for invalid literal ValueError parsing ipv6 url(s)

Switch to using network_utils for splitting the URL. The code
in oslo-incubator supports ipv6 urls

Change-Id: I76be6173b97eb000319d30b4e9232a5a7c4a5aba
Closes-Bug: #1298137

glanceclient/common/http.py

@@ -39,6 +39,7 @@ import OpenSSL
 
 from glanceclient.common import utils
 from glanceclient import exc
+from glanceclient.openstack.common import network_utils
 from glanceclient.openstack.common import strutils
 
 try:
@@ -85,7 +86,7 @@ class HTTPClient(object):
 
     @staticmethod
     def parse_endpoint(endpoint):
-        return parse.urlparse(endpoint)
+        return network_utils.urlsplit(endpoint)
 
     @staticmethod
     def get_connection_class(scheme):