Failure in rabbitmq os-refresh-config on master

rabbitmq os-refresh-config in_cluster returns false when local
node is actually in the cluster. This causes it to attempt to start
the rabbitmq application (start_app), which fails and thus
causes os-collect-config to repeatedly fail.

Closes-Bug: #1304306

Change-Id: I52acd401ab0a12d11ca4af265599460440a31ed1
Merge "Failure in rabbitmq os-refresh-config on master"