Remove upstream Salt repos from models and replace with mcp repos

Fixes: PROD-22008 (PROD:22008)

Change-Id: I1537c55fef23d732952b944dc6f2dda3e37d02df
diff --git a/classes/cluster/virtual-mcp10-contrail/openstack/compute.yml b/classes/cluster/virtual-mcp10-contrail/openstack/compute.yml
index 4457e18..58c558d 100755
--- a/classes/cluster/virtual-mcp10-contrail/openstack/compute.yml
+++ b/classes/cluster/virtual-mcp10-contrail/openstack/compute.yml
@@ -2,7 +2,7 @@
 - system.linux.system.repo.mcp.contrail
 - system.linux.system.repo.mcp.openstack
 - system.linux.system.repo.mcp.extra
-- system.linux.system.repo.saltstack.xenial
+- system.linux.system.repo.mcp.apt_mirantis.saltstack
 - system.linux.network.hosts
 - system.nova.compute.cluster
 - system.opencontrail.compute.cluster