Switch maas ssaltstack_repo's to mirror

Change-Id: I33ff7939c0d7fb675912690162737d75eccdbaaf
diff --git a/maas/region/cluster.yml b/maas/region/cluster.yml
index 8df6ea8..ff6dac5 100644
--- a/maas/region/cluster.yml
+++ b/maas/region/cluster.yml
@@ -1,12 +1,18 @@
 classes:
   - system.maas.region.single
   - system.keepalived.server.cluster_maas
+  - system.linux.system.repo.keystorage.saltstack
 parameters:
   _param:
     cluster_vip_address: 10.0.175.80
+    linux_system_repo_mcp_saltstack_url: http://mirror.mirantis.com/${_param:apt_mk_version}/saltstack-2017.7/
   maas:
     cluster:
       enabled: true
       role: ${_param:maas_cluster_role}
       region:
-        host: ${_param:cluster_vip_address}
\ No newline at end of file
+        host: ${_param:cluster_vip_address}
+      saltstack_repo_key: ${linux:system:repo:mcp_saltstack:key}
+      saltstack_repo_trusty: "deb [arch=amd64] ${_param:linux_system_repo_mcp_saltstack_url}/trusty/ trusty main"
+      saltstack_repo_xenial: "deb [arch=amd64] ${_param:linux_system_repo_mcp_saltstack_url}/xenial/ xenial main"
+