Goal: 

update https://docs.redhat.com/en/documentation/red_hat_openstack_services_on_openshift/18.0/html/deploying_red_hat_openstack_services_on_openshift/assembly_creating-the-control-plane#proc_creating-the-control-plane_controlplane 

describing how to use messagingBus.Cluster and notificationsBus.Cluster to configure services to use rabbitmq cluster(s) for rpc or notifications.