Comment 1 for bug 1861506

This test is also failing with py38

cinder.tests.unit.volume.drivers.dell_emc.unity.test_client.ClientTest.test_delete_host_wo_lock
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Captured traceback:
~~~~~~~~~~~~~~~~~~~
    Traceback (most recent call last):
      File "/home/sahid/merge/cinder/.tox/py38/lib/python3.8/site-packages/mock/mock.py", line 1330, in patched
        return func(*args, **keywargs)
      File "/home/sahid/merge/cinder/cinder/tests/unit/volume/drivers/dell_emc/unity/test_client.py", line 651, in test_delete_host_wo_lock
        self.assertRaises(ex.HostDeleteIsCalled,
      File "/usr/lib/python3.8/unittest/case.py", line 816, in assertRaises
        return context.handle('assertRaises', args, kwargs)
      File "/usr/lib/python3.8/unittest/case.py", line 202, in handle
        callable_obj(*args, **kwargs)
    TypeError: 'NoneType' object is not callable