Reduce duplication in Neutron reclass

  * Common definitions moved to neutron/control/cluster.yml
                               neutron/control/single.yml
  * neutron/control/cluster.yml and neutron/control/single.yml
    defined in conforming backend ones.

Change-Id: I9bf580c70a886db7188716f96d48f1d2a2d3a2a1
diff --git a/neutron/control/opencontrail/single.yml b/neutron/control/opencontrail/single.yml
index 4bbd8f8..5cf06bf 100644
--- a/neutron/control/opencontrail/single.yml
+++ b/neutron/control/opencontrail/single.yml
@@ -1,5 +1,5 @@
 classes:
-- service.neutron.control.single
+- system.neutron.control.single
 - system.galera.server.database.neutron
 parameters:
   neutron:
@@ -12,7 +12,7 @@
         host: ${_param:openstack_control_address}
       message_queue:
         members:
-          - host: ${_param:openstack_message_queue_node01_address}
+          - host: ${_param:single_address}
       compute:
         host: ${_param:openstack_control_address}
         region: ${_param:openstack_region}
@@ -23,4 +23,4 @@
         user: admin
         password: ${_param:keystone_admin_password}
         tenant: admin
-        token: ${_param:keystone_service_token}
\ No newline at end of file
+        token: ${_param:keystone_service_token}