Use rpc_transport_url in vitrage.conf

Change-Id: I1d24d4a90a6ab4abc6a3b24c0334b380d53e896a

ansible/roles/vitrage/templates/vitrage.conf.j2

@@ -11,7 +11,7 @@ log_file = /var/log/kolla/vitrage/vitrage-api.log
 notifiers = {{ vitrage_notifiers|map(attribute='name')|join(',') }}
 {% endif %}
 
-transport_url = rabbit://{% for host in groups['rabbitmq'] %}{{ rabbitmq_user }}:{{ rabbitmq_password }}@{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
+transport_url = {{ rpc_transport_url }}
 
 [api]
 host = {{ api_interface_address }}