message: add back rabbitmq_delayed_message_exchange now that the /etc/rabbitmq directory is assembled from scratch.
diff: @@ -176,7 +176,7 @@ objects:
  ## queue master locator
  queue_master_locator=min-masters
  enabled_plugins: |
  - [rabbitmq_management,rabbitmq_peer_discovery_k8s].
  + [rabbitmq_management,rabbitmq_delayed_message_exchange,rabbitmq_peer_discovery_k8s].
  - apiVersion: v1
  kind: Service
  