Allow to configure cluster_status env variables

Due to internal bugs in rabbitmq restart procedure of one node
in cluster might lead to cluster non-operability.
When node is joingin to cluster the cluster should be in
well-established state. This patch allows to configure
cluster wait variables that are used by startup script and provide
such guarantee:

rabbitmq:
  cluster:
    cluster_status:
      cluster_status_timeout: 1200
      cluster_status_retry_delay: 10

Change-Id: If7d7dd75be25199366e52345a53e46ad749c4088
Related-Prod: PROD-29098
1 file changed