Comment 1 for bug 1513839

To reproduce in tests:

diff --git a/keystoneclient/tests/unit/auth/test_identity_v3.py b/keystoneclient/tests/unit/auth/test_identity_v3.py
index aaae500..f0c36af 100644
--- a/keystoneclient/tests/unit/auth/test_identity_v3.py
+++ b/keystoneclient/tests/unit/auth/test_identity_v3.py
@@ -216,7 +216,7 @@ class V3IdentityPlugin(utils.TestCase):
                         username=self.TEST_USER,
                         password=self.TEST_PASS)
         s = session.Session(auth=a)
- cs = client.Client(session=s, auth_url=self.TEST_URL)
+ cs = client.Client(session=s)

         # As a sanity check on the auth_ref, make sure client has the
         # proper user id, that it fetches the right project response