Add mitaka models with trusty

Mitaka models with trusty for maintenance team purposes.
Change-Id: I8eac7ac18d7f7632bdfb36c550eb1ee4c1b4cc80
diff --git a/classes/cluster/virtual-mcp-mitaka-dvr/openstack/dashboard.yml b/classes/cluster/virtual-mcp-mitaka-dvr/openstack/dashboard.yml
index 743aa63..6b484c5 100644
--- a/classes/cluster/virtual-mcp-mitaka-dvr/openstack/dashboard.yml
+++ b/classes/cluster/virtual-mcp-mitaka-dvr/openstack/dashboard.yml
@@ -1,10 +1,6 @@
 classes:
-- system.linux.system.repo.ubuntu
-- system.linux.system.repo.mcp.openstack
-- system.linux.system.repo.mcp.extra
-- system.linux.system.repo.saltstack.xenial
 - system.horizon.server.single
-- cluster.virtual-mcp-mitaka-dvr
+- system.linux.system.repo.saltstack.xenial
 parameters:
   _param:
     horizon_site_branding: OpenStack Dashboard