[SDK] test_verify_rest_response is flaky in python 3.5

with pytest.raises(RestException, match=str(mock_json_body)):
> verify_rest_response(mock_response, '/api/v1/jobs')
E AssertionError: Pattern '{'b': 2, 'c': 3, 'a': 200}' not found in 'None: Response: {'c': 3, 'a': 200, 'b': 2}'