Fix test_update_load_balancer_status

This test used assertEqual to compare 2 dictionaries from octavia and
octavia-lib, but the result of the comparison depends on the versions of
octavia and octavia-lib, they don't necessarily match.
Use internal comparison functions to prevent further issues when adding
features to octavia-lib.

Change-Id: I3922d66eb4a04fdcb9b1afeba6c20ab0c52338cd

Author: gthiemonge

octavia/tests/functional/api/drivers/driver_agent/test_driver_agent.py

@@ -600,8 +600,9 @@ def test_update_load_balancer_status(self):
         self.session.commit()
 
         result = self.driver_lib.get_member(member_dict[lib_consts.ID])
-        self.assertEqual(self.sample_data.provider_member2_dict,
-                         result.to_dict(render_unsets=True))
+        self._compare_member_dicts(
+            self.sample_data.provider_member2_dict,
+            result.to_dict(render_unsets=True))
 
         # Test deleting a member
         status = {