Avoid introducing intermittent errors in test case

The models listed with superuser access at different times are not
comparable. However, models listed with superuser access should always
have more than the non-superuser access (because of the controller
model).

Author: cderici

tests/integration/test_controller.py

@@ -149,7 +149,7 @@ async def test_list_models_user_access(event_loop):
         # testing all flag
         await user.grant(acl='superuser')
         models_all = await controller.list_models(username, all=True)
-        assert len(models_all) >= len(models1)
+        assert len(models_all) > len(models2)
 
 
 @base.bootstrapped