Remove lower() calls since the response was fixed to be "OK" (#475)

* on rebase clean commented-by- labels

* Update status message, since response message was fixed recently

Author: dbasunag

tests/model_registry/python_client/test_model_registry_creation.py

@@ -145,4 +145,4 @@ def test_model_registry_endpoint_response(
         output = execute_model_registry_get_command(
             url=f"{model_registry_rest_url}/{endpoint}", headers=model_registry_rest_headers, json_output=False
         )
-        assert output["raw_output"].lower() == "OK".lower()
+        assert output["raw_output"] == "OK"