Backport repos structure

Depends-On: https://gerrit.mcp.mirantis.com/#/c/37429/

Change-Id: Idce7bf41b98c9d684381fae7197d74c21dd82ed1
Prod-related: PROD-28395 (PROD:28395)
diff --git a/defaults/init.yml b/defaults/init.yml
index cc439ce..e657bbd 100644
--- a/defaults/init.yml
+++ b/defaults/init.yml
@@ -7,6 +7,7 @@
 
 classes:
 - system.defaults.linux_system_repo
+- system.defaults.stacklight
 parameters:
   _param:
     mcp_version: stable
@@ -17,3 +18,4 @@
     # Other
     salt_control_xenial_image_backend: /var/lib/libvirt/images/backends/xenial.qcow2
     salt_control_trusty_image_backend: /var/lib/libvirt/images/backends/trusty.qcow2
+    linux_repo_contrail_version: 3.0