Fix shade tests with OCC 1.13.0

The latest os-client-config, 1.13.0, breaks the shade tests as the
client instantiations are slightly different. Since I'm not sure we
can modify our tests to use against different OCC versions (there
doesn't appear to be a version attribute anywhere), I upped the
minimum requirements.txt value as well as fixed the tests for the
latest version.

Change-Id: I18292ca39789c41caea74901754d66d3301bb420

requirements.txt

@@ -4,7 +4,7 @@ munch
 decorator
 jsonpatch
 ipaddress
-os-client-config>=1.11.1
+os-client-config>=1.13.0
 requestsexceptions>=1.1.1
 six
 

shade/tests/unit/test_shade.py

@@ -80,8 +80,8 @@ class TestShade(base.TestCase):
         get_session_mock.return_value = session_mock
         self.cloud.glance_client
         mock_client.assert_called_with(
-            '2',
-            endpoint='http://example.com',
+            2.0,
+            endpoint_override='http://example.com',
             region_name='', service_name=None,
             interface='public',
             service_type='image', session=mock.ANY,
@@ -95,6 +95,7 @@ class TestShade(base.TestCase):
         self.cloud.heat_client
         mock_client.assert_called_with(
             '1',
+            endpoint_override=None,
             endpoint_type='public',
             region_name='',
             service_name=None,