Flaky config unit tests vnc_cfg_api_server.tests.test_crud_basic.TestListUpdate

[Édouard Thuleau]

======================================================================
FAIL: setUpClass (vnc_cfg_api_server.tests.test_crud_basic.TestListUpdate)
tags: worker-3
----------------------------------------------------------------------
Traceback (most recent call last):
  File "vnc_cfg_api_server/tests/test_crud_basic.py", line 179, in setUpClass
    super(TestListUpdate, cls).setUpClass(*args, **kwargs)
  File "../common/tests/test_common.py", line 745, in setUpClass
    db=db)
  File "../common/tests/test_common.py", line 233, in create_api_server_instance
    ret_server_info['service_port'])
  File "../common/tests/test_utils.py", line 1117, in block_till_port_listened
    raise Exception("port %s not up after %d retries" % (server_port, retries))
Exception: port 54300 not up after 30 retries

From the unit test API server log file:

[SYS_ERR]: VncApiError: Error in rabbitmq heartbeat greenlet: 'Connection' object has no attribute 'connected'

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/41189
Submitter: Édouard Thuleau (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/41189
Committed: http://github.com/Juniper/contrail-controller/commit/6bd534a940298e1ec5fa70b0fe023d1ecbeec6d4
Submitter: Zuul v3 CI (<email address hidden>)
Branch: master

commit 6bd534a940298e1ec5fa70b0fe023d1ecbeec6d4
Author: Édouard Thuleau <email address hidden>
Date: Thu Mar 29 18:23:43 2018 +0200

[config] Fix Kazoo client mock for unit test

Sometimes config unit tests failed due to an error in the RabbitMQ
client. It's due to a bug in the Kazoo client mock used by unit tests.

Change-Id: I8bdaa3bc2b60682ae3e7dd10aa94742472b2beb3
Closes-Bug: #1759891