py34 fails with test test_is_cleanup_traversal_raise_update_inprogress

[Sergey Kraynev]

ft1.1819: heat.tests.engine.test_engine_worker.CheckWorkflowCleanupTest.test_is_cleanup_traversal_raise_update_inprogress_StringException: Empty attachments:
  pythonlogging:'alembic'
  pythonlogging:'barbicanclient'
  pythonlogging:'cinderclient'
  pythonlogging:'cliff'
  pythonlogging:'designateclient'
  pythonlogging:'dogpile'
  pythonlogging:'fasteners'
  pythonlogging:'heat-provision'
  pythonlogging:'heat.engine.environment'
  pythonlogging:'heat_integrationtests'
  pythonlogging:'heatclient'
  pythonlogging:'iso8601'
  pythonlogging:'keystoneclient'
  pythonlogging:'keystonemiddleware'
  pythonlogging:'magnumclient'
  pythonlogging:'migrate'
  pythonlogging:'mistralclient'
  pythonlogging:'neutronclient'
  pythonlogging:'novaclient'
  pythonlogging:'object'
  pythonlogging:'oslo'
  pythonlogging:'oslo_concurrency'
  pythonlogging:'oslo_config'
  pythonlogging:'oslo_db'
  pythonlogging:'oslo_i18n'
  pythonlogging:'oslo_log'
  pythonlogging:'oslo_messaging'
  pythonlogging:'oslo_middleware'
  pythonlogging:'oslo_policy'
  pythonlogging:'oslo_service'
  pythonlogging:'oslo_utils'
  pythonlogging:'oslo_versionedobjects'
  pythonlogging:'requests'
  pythonlogging:'routes'
  pythonlogging:'saharaclient'
  pythonlogging:'sqlalchemy'
  pythonlogging:'stevedore'
  pythonlogging:'swiftclient'
  pythonlogging:'troveclient'

pythonlogging:'': {{{
INFO [heat.engine.stack] Stack CREATE IN_PROGRESS (check_workflow_create_stack): Stack CREATE started
    INFO [heat.engine.stack] convergence_dependencies: {(5, True): {}, (3, True): {(5, True), (4, True)}, (4, True): {}, (1, True): {(3, True)}, (2, True): {(3, True)}}
    INFO [heat.engine.stack] Triggering resource 5 for True update
    INFO [heat.engine.stack] Triggering resource 4 for True update
    INFO [heat.engine.stack] Stack DELETE IN_PROGRESS (check_workflow_create_stack): Stack DELETE started
    INFO [heat.engine.stack] convergence_dependencies: {(2, False): {(2, True)}, (5, False): {(5, True)}, (3, False): {(3, True)}, (5, True): {}, (1, False): {(1, True)}, (3, True): {(5, True), (4, True)}, (4, True): {}, (1, True): {(3, True)}, (2, True): {(3, True)}, (4, False): {(4, True)}}
    INFO [heat.engine.stack] Triggering resource 5 for True update
    INFO [heat.engine.stack] Triggering resource 4 for True update
}}}

Traceback (most recent call last):
  File "/home/jenkins/workspace/gate-heat-python34/.tox/py34/lib/python3.4/site-packages/mock/mock.py", line 1305, in patched
    return func(*args, **keywargs)
  File "/home/jenkins/workspace/gate-heat-python34/heat/tests/engine/test_engine_worker.py", line 511, in test_is_cleanup_traversal_raise_update_inprogress
    self.stack.time_remaining())
  File "/home/jenkins/workspace/gate-heat-python34/.tox/py34/lib/python3.4/site-packages/mock/mock.py", line 948, in assert_called_once_with
    return self.assert_called_with(*args, **kwargs)
  File "/home/jenkins/workspace/gate-heat-python34/.tox/py34/lib/python3.4/site-packages/mock/mock.py", line 937, in assert_called_with
    six.raise_from(AssertionError(_error_message(cause)), cause)
  File "<string>", line 2, in raise_from
AssertionError: Expected call: check_resource_cleanup(<heat.engine.resources.openstack.heat.random_string.RandomString object at 0x7ff5f4072e80>, 1, {}, 'engine_id', 3599)
Actual call: check_resource_cleanup(<heat.engine.resources.openstack.heat.random_string.RandomString object at 0x7ff5f016ed68>, 1, {}, 'engine_id', 3600)

[Peter Razumovsky (prazumovsky)]

dupe of https://bugs.launchpad.net/heat/+bug/1493906