added system.linux.system.repo.mcp.salt where missing

Change-Id: Iec33efa97a7638437ddfe280ec3f2c69889e791f
diff --git a/classes/cluster/ceph-ha/infra/config.yml b/classes/cluster/ceph-ha/infra/config.yml
index 2de9d4c..8d1244e 100644
--- a/classes/cluster/ceph-ha/infra/config.yml
+++ b/classes/cluster/ceph-ha/infra/config.yml
@@ -1,5 +1,6 @@
 classes:
 - system.linux.system.repo.ubuntu
+- system.linux.system.repo.mcp.salt
 - system.salt.master.pkg
   #- system.salt.master.git
 - system.salt.minion.ca.salt_master