Handle endpoints with versions consistently

When using the cli the Glance client wraps the endpoint in a 'strip
version' function. This means that endpoints of the following forms can
both be used:

https://region-x.images.example.com:443/v1
https://region-x.images.example.com:443

When calling the client library directly (as Ceilometer does) however
only endpoints of the second form work. The cli and library should handle
the two cases consistently.

Addresses bug 1243276.

Change-Id: Ice7b581fee32540a7057ba47433a10166a3caed2

glanceclient/v1/client.py

@@ -14,6 +14,7 @@
 #    under the License.
 
 from glanceclient.common import http
+from glanceclient.common import utils
 from glanceclient.v1 import image_members
 from glanceclient.v1 import images
 
@@ -28,8 +29,9 @@ class Client(object):
                             http requests. (optional)
     """
 
-    def __init__(self, *args, **kwargs):
+    def __init__(self, endpoint, *args, **kwargs):
         """Initialize a new client for the Images v1 API."""
-        self.http_client = http.HTTPClient(*args, **kwargs)
+        self.http_client = http.HTTPClient(utils.strip_version(endpoint),
+                                           *args, **kwargs)
         self.images = images.ImageManager(self.http_client)
         self.image_members = image_members.ImageMemberManager(self.http_client)