Sync charm helpers
Store shared-db information in the peer relation for clustered deploys and echo back to client service for each unit
Sync charm helpers
Merged trunk in and fixed lint
Merge trunk rabbit in and fix conflicts
[gnuoy,r=aisrael] Store amqp information in the peer relation for clustered deploys and echo back to client service for each unit. The removes the current SPOF where only the leader has set the relation information.