Move to apt_mirantis repo

   * repo.ubuntu => repo.mcp.apt_mirantis.ubuntu

Change-Id: If279fdb5d387af1d9521377fce126bcb56ba55ef
diff --git a/classes/cluster/os-aio-contrail/openstack/dashboard.yml b/classes/cluster/os-aio-contrail/openstack/dashboard.yml
index 5e7c16f..a45f059 100755
--- a/classes/cluster/os-aio-contrail/openstack/dashboard.yml
+++ b/classes/cluster/os-aio-contrail/openstack/dashboard.yml
@@ -1,5 +1,5 @@
 classes:
-- system.linux.system.repo.ubuntu
+- system.linux.system.repo.mcp.apt_mirantis.ubuntu
 - system.linux.system.repo.mcp.openstack
 - system.linux.system.repo.mcp.extra
 - system.linux.system.repo.saltstack.xenial