Updated openstack/openstack
Project: openstack/oslo.messaging  ba8c8d4665cc50aba36f230c97b1203abc2dddf7

Wait for expected messages in listener pool test

In the listener pool test, we must wait that all expected messages
have been receive before stopping the listener.

Closes bug: #1397338

Change-Id: I5e4b39b54e3b99c014f5f9c77926108b90f94192