Test test_mock_patch_cleanup_on_teardown failing in oslotest repository

[Artur Kaszuba]

Job periodic-oslotest-python27-mos80 failing with error, please take a look

03:25:10 FAIL: tests.unit.test_base.TestBaseTestCase.test_mock_patch_cleanup_on_teardown
03:25:10 tags: worker-0
03:25:10 ----------------------------------------------------------------------
03:25:10 Traceback (most recent call last):
03:25:10 File "/home/jenkins/workspace/periodic-oslotest-python27-mos80/tests/unit/test_base.py", line 100, in test_mock_patch_cleanup_on_teardown
03:25:10 self.assertEqual(obj.value, obj.backup)
03:25:10 File "/home/jenkins/workspace/periodic-oslotest-python27-mos80/.tox/py27/local/lib/python2.7/site-packages/testtools/testcase.py", line 362, in assertEqual
03:25:10 self.assertThat(observed, matcher, message)
03:25:10 File "/home/jenkins/workspace/periodic-oslotest-python27-mos80/.tox/py27/local/lib/python2.7/site-packages/testtools/testcase.py", line 447, in assertThat
03:25:10 raise mismatch_error
03:25:10 testtools.matchers._impl.MismatchError: !=:
03:25:10 reference = <MagicMock name='value' id='139723365837968'>
03:25:10 actual = <object object at 0x7f13e4722230>

Job log: https://jenkins.mosi.mirantis.net/job/periodic-oslotest-python27-mos80/170/console

[Davanum Srinivas (DIMS) (dims-v)]

We need this upstream review:
https://review.openstack.org/#/c/279728/