test_set_multi_controllers_connection_mode failures

[Armando Migliaccio]

Looks like a newly introduced intermittent failure (by https://review.openstack.org/#/c/167913/):

http://logs.openstack.org/21/177121/4/gate/gate-neutron-dsvm-functional/a09b575/testr_results.html.gz

ft1.80: neutron.tests.functional.agent.test_ovs_lib.OVSBridgeTestCase.test_set_multi_controllers_connection_mode(native)_StringException: Empty attachments:
  pythonlogging:''
  pythonlogging:'neutron.api.extensions'
  stderr
  stdout

Traceback (most recent call last):
  File "neutron/tests/functional/agent/test_ovs_lib.py", line 239, in test_set_multi_controllers_connection_mode
    self._set_controllers_connection_mode(controllers)
  File "neutron/tests/functional/agent/test_ovs_lib.py", line 243, in _set_controllers_connection_mode
    self.assertEqual(controllers, self.br.get_controller())
  File "/opt/stack/new/neutron/.tox/dsvm-functional/local/lib/python2.7/site-packages/testtools/testcase.py", line 350, in assertEqual
    self.assertThat(observed, matcher, message)
  File "/opt/stack/new/neutron/.tox/dsvm-functional/local/lib/python2.7/site-packages/testtools/testcase.py", line 435, in assertThat
    raise mismatch_error
testtools.matchers._impl.MismatchError: !=:
reference = ['tcp:192.0.2.0:6633', 'tcp:192.0.2.1:55']
actual = [u'tcp:192.0.2.1:55', u'tcp:192.0.2.0:6633']

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/177351

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/177351
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=e6bd3ed9c86ff493b7087c99797bfd3fb473c3a7
Submitter: Jenkins
Branch: master

commit e6bd3ed9c86ff493b7087c99797bfd3fb473c3a7
Author: armando-migliaccio <email address hidden>
Date: Fri Apr 24 09:27:40 2015 -0700

    Fix MismatchError to nondeterministic order for list of controllers

    The list of controllers returned by the ovsdb server can be in any order,
    therefore we can't assert likes for likes. Assert the sorted lists instead.

    Change-Id: Ice3bb8cc0b3da70f8c9aae50d8cdae2b474ff49b
    Closes-bug: #1448202

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: neutron-pecan
Review: https://review.openstack.org/185072