Readd queue configuration with updated options

roles/pvc/templates/pvc/pvcapid.yaml.j2

@@ -55,6 +55,14 @@ pvc:
             user: {{ pvc_api_database_user }}
             # pass: PostgreSQL user password, randomly generated
             pass: {{ pvc_api_database_password }}
+        # queue: Celery backend queue using the PVC Zookeeper cluster
+        queue:
+            # host: KeyDB (Redis) hostname, the primary coordinator floating IP in the cluster network
+            host: {{ pvc_cluster_floatingip }}
+            # port: KeyDB (Redis) port, invariably '6279'
+            port: 6379
+            # path: KeyDB (Redis) queue path, invariably '/0'
+            path: /0
         # ceph_cluster: Information about the Ceph storage cluster
         ceph_cluster:
             # storage_hosts: The list of hosts that the Ceph monitors are valid on; if empty (the default),