gate fails reporting 'No module named vine.five'

[Hanxi Liu]

All unit tests fail like this:

ceilometer.tests.unit.test_middleware.TestNotifications.test_targets
--------------------------------------------------------------------

Captured traceback:
~~~~~~~~~~~~~~~~~~~
    Traceback (most recent call last):
      File "ceilometer/tests/unit/test_middleware.py", line 73, in setUp
        self.setup_messaging(self.CONF)
      File "ceilometer/tests/base.py", line 33, in setup_messaging
        self.useFixture(oslo_messaging.conffixture.ConfFixture(conf))
      File "/opt/stack/ceilometer/.tox/py27/lib/python2.7/site-packages/oslo_messaging/conffixture.py", line 50, in __init__
        'oslo_messaging_rabbit')
      File "/opt/stack/ceilometer/.tox/py27/lib/python2.7/site-packages/oslo_messaging/conffixture.py", line 25, in _import_opts
        __import__(module)
      File "/opt/stack/ceilometer/.tox/py27/lib/python2.7/site-packages/oslo_messaging/_drivers/impl_rabbit.py", line 30, in <module>
        import kombu.connection
      File "/opt/stack/ceilometer/.tox/py27/lib/python2.7/site-packages/kombu/connection.py", line 15, in <module>
        from kombu import exceptions
      File "/opt/stack/ceilometer/.tox/py27/lib/python2.7/site-packages/kombu/exceptions.py", line 8, in <module>
        from kombu.five import python_2_unicode_compatible
      File "/opt/stack/ceilometer/.tox/py27/lib/python2.7/site-packages/kombu/five.py", line 6, in <module>
        import vine.five
    ImportError: No module named vine.five

the issue caused because of the 4.0.0 kombu release.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/392228

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/392230

[OpenStack Infra (hudson-openstack)]

Change abandoned by Hanxi Liu (<email address hidden>) on branch: master
Review: https://review.openstack.org/392230

[Hanxi Liu (hanxi-liu)]

it seems the issue of oslo.messaging, the details: https://bugs.launchpad.net/oslo.messaging/+bug/1638263/comments/5. we could wait the bug to confirm and be resolved.

[OpenStack Infra (hudson-openstack)]

Change abandoned by Hanxi Liu (<email address hidden>) on branch: master
Review: https://review.openstack.org/392228