Use a single class to create 'neutron' database

Use a class instead of multiplying 'neutron' database definitions.
The class 'system.galera.server.database.neutron' will be included
only once for a node that avoids database definitions dublication.

Change-Id: Ibf318200a7cf83fe3bd00c3ca265ed3bcb989811
Closes-Bug: https://mirantis.jira.com/browse/PROD-15066
diff --git a/neutron/control/opencontrail/cluster.yml b/neutron/control/opencontrail/cluster.yml
index caaaf6d..d85e554 100644
--- a/neutron/control/opencontrail/cluster.yml
+++ b/neutron/control/opencontrail/cluster.yml
@@ -3,21 +3,8 @@
 - service.haproxy.proxy.single
 - service.neutron.control.cluster
 - system.haproxy.proxy.listen.openstack.neutron
+- system.galera.server.database.neutron
 parameters:
-  mysql:
-    server:
-      database:
-        neutron:
-          encoding: utf8
-          users:
-          - name: neutron
-            password: ${_param:mysql_neutron_password}
-            host: '%'
-            rights: all
-          - name: neutron
-            password: ${_param:mysql_neutron_password}
-            host: ${_param:cluster_local_address}
-            rights: all
   neutron:
     server:
       dns_domain: ${_param:cluster_domain}