Add missing repository in OC4 lab

Change-Id: I0dc9c54013ba869c6f28a736c6b6872f3c853853
diff --git a/classes/cluster/os-ha-contrail-40/infra/config.yml b/classes/cluster/os-ha-contrail-40/infra/config.yml
index 97f1070..dc238d6 100644
--- a/classes/cluster/os-ha-contrail-40/infra/config.yml
+++ b/classes/cluster/os-ha-contrail-40/infra/config.yml
@@ -2,6 +2,7 @@
 - service.git.client
 - system.linux.system.single
 - system.linux.system.repo.mcp.salt
+- system.linux.system.repo.mcp.openstack
 - system.openssh.client.lab
 - system.salt.master.api
 - system.salt.master.pkg