maubot: actually use the rabbit role properly

Signed-off-by: Ryan Lerch <rlerch@redhat.com>

playbooks/openshift-apps/maubot.yml

@@ -31,13 +31,9 @@
     - /srv/web/infra/ansible/vars/{{ ansible_distribution }}.yml
 
   roles:
-    # Set up for fedora-messaging
-  - name: Create the RabbitMQ user
-    import_role:
-      name: rabbit/user
-    vars:
-      username: "zodbot-{{ env_short }}"
-      sent_topics: ^org\.fedoraproject\.{{ env_short }}\.meetbot\..*
+  - role: rabbit/user
+    username: "zodbot-{{ env_short }}"
+    sent_topics: ^org\.fedoraproject\.{{ env_short }}\.meetbot\..*
 
   - role: openshift/project
     app: maubot