Intermittent int-test failures in replication tests

[Doug Shelley]

Noticed that on occasion, the int-tests fail like this:

<snip>

WaitForCreateSlaveToFinish
  Wait until the instance is created and set up as slave.
  test_slave_created OK 422.83
 VerifySlave
  test_correctly_started_replication OK 287.99
  test_backup_deleted OK 0.18
  test_slave_is_read_only OK 3.95
  test_create_db_on_master OK 0.51
 test_database_replicated_on_slave ERROR
  test_existing_db_exists_on_slave ERROR

<snip>

 ======================================================================
 | ERROR: proboscis.case.MethodTest (test_database_replicated_on_slave)
 | ----------------------------------------------------------------------
 | Traceback (most recent call last):
 | File "/usr/local/lib/python2.7/dist-packages/proboscis/case.py", line 296, in testng_method_mistake_capture_func
      compatability.capture_type_error(s_func)
 | File "/usr/local/lib/python2.7/dist-packages/proboscis/compatability/exceptions_2_6.py", line 27, in capture_type_error
 | func()
 | File "/usr/local/lib/python2.7/dist-packages/proboscis/case.py", line 350, in func
 | func(test_case.state.get_state())
 | File "/usr/local/lib/python2.7/dist-packages/proboscis/decorators.py", line 59, in new_method
 | return func(*kargs, **kwargs)
 | File "/opt/stack/new/trove/trove/tests/api/replication.py", line 182, in test_database_replicated_on_slave
 | poll_until(self.db_is_found(slave_instance.replicated_db))
 | File "/opt/stack/new/trove/trove/common/utils.py", line 199, in poll_until
 | return lc.wait()
 | File "/usr/local/lib/python2.7/dist-packages/eventlet/event.py", line 121, in wait
 | return hubs.get_hub().switch()
 | File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 294, in switch
 | return self.greenlet.switch()
 | File "/opt/stack/new/trove/trove/openstack/common/loopingcall.py", line 81, in _inner
 | self.f(*self.args, **self.kw)
 | File "/opt/stack/new/trove/trove/common/utils.py", line 189, in poll_and_check
 | obj = retriever()
 | File "/opt/stack/new/trove/trove/tests/api/replication.py", line 150, in find_database
 | databases = instance_info.dbaas.databases.list(slave_instance.id)
 | File "/usr/local/lib/python2.7/dist-packages/troveclient/v1/databases.py", line 54, in list
 | return self._paginated(url, "databases", limit, marker)
 | File "/usr/local/lib/python2.7/dist-packages/troveclient/base.py", line 70, in _paginated
 | resp, body = self.api.client.get(url)
 | File "/usr/local/lib/python2.7/dist-packages/troveclient/compat/client.py", line 237, in get
 | return self._cs_request(url, 'GET', **kwargs)
 | File "/usr/local/lib/python2.7/dist-packages/troveclient/compat/client.py", line 231, in _cs_request
 | return request()
 | File "/usr/local/lib/python2.7/dist-packages/troveclient/compat/client.py", line 221, in request
 | **kwargs)
 | File "/usr/local/lib/python2.7/dist-packages/troveclient/compat/client.py", line 209, in _time_request
 | resp, body = self.request(url, method, **kwargs)
 | File "/usr/local/lib/python2.7/dist-packages/troveclient/compat/client.py", line 187, in request
 | raise exceptions.from_response(resp, body)
 | UnprocessableEntity: Instance 6304219e-4ca8-461b-8d50-7fe755df1385 is not ready. (HTTP 422)

[Amrith Kumar (amrith)]

I'm not seeing this of late. If this is no longer occurring, can we get rid of the bug?