CORE-1544 Stop/start o-c-c before/after RabbitMQ

This change stops o-c-c prior to restarting RabbitMQ in order to
avoid any sort of odd timing collission.  After RabbitMQ is
restarted, o-c-c is restarted.

Change-Id: I45b0bfe9dd4f22eb192c9ac49bcb498a35b8b577