Description of problem:

The following neutron-lbaas RHOSP 12 unit test, fails:

neutron_lbaas.tests.unit.common.cert_manager.barbican_auth.test_barbican_acl.TestBarbicanACLAuth.test_get_barbican_client

Version-Release number of selected component (if applicable): osp 12 source


How reproducible: 100%


Steps to Reproduce:
1. clone neutron-lbaas and checkout osp 12 branch
2. run 'tox -e py27'

Actual results:

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/neutron/tests/base.py", line 118, in func
    return f(self, *args, **kwargs)
  File "neutron_lbaas/tests/unit/common/cert_manager/barbican_auth/test_barbican_acl.py", line 43, in test_get_barbican_client
    barbican_client.Client
  File "/usr/lib/python2.7/site-packages/testtools/testcase.py", line 401, in assertIsInstance
    self.assertThat(obj, matcher, msg)
  File "/usr/lib/python2.7/site-packages/testtools/testcase.py", line 433, in assertThat
    mismatch_error = self._matchHelper(matchee, matcher, message, verbose)
  File "/usr/lib/python2.7/site-packages/testtools/testcase.py", line 483, in _matchHelper
    mismatch = matcher.match(matchee)
  File "/usr/lib/python2.7/site-packages/testtools/matchers/_basic.py", line 230, in match
    if isinstance(other, self.types):
TypeError: isinstance() arg 2 must be a class, type, or tuple of classes and types



Expected results: All tests passed successfully