Fix OCF chown for rabbitmq dirs

Then rabbitmq directories was already created and/or owned by a root,
rabbitmq would fail to start as it cannot access its PID file dir.

The solution is to check, if rabbitmq dirs exist and rabbit can write to
them. If it cannot, chown them

Closes-bug: #1405408

Change-Id: Ieed8b4ae1b83b20bde67a96a206453688cda38ef
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
Merge "Fix OCF chown for rabbitmq dirs"