Abort restart-cluster if something goes wrong

For example, if the first restarted node doesn't start,
don't try to restart the other nodes. This mimics what
orchestrators such as Kubernetes or BOSH would do
(although they perform this check differently)

Author: mkuratczyk

deps/rabbit_common/mk/rabbitmq-run.mk

@@ -423,6 +423,7 @@ restart-cluster:
 		  -rabbitmq_prometheus tcp_config [{port,$$((15692 + $$n - 1))}] \
 		  -rabbitmq_stream tcp_listeners [$$((5552 + $$n - 1))] \
 		  "; \
+		  $(RABBITMQCTL) -n "$$nodename" await_online_nodes $(NODES) || exit 1; \
 	done; \
 	wait