Support multi-node CORD install
diff --git a/cord-single-playbook.yml b/cord-single-playbook.yml
index dec17a3..81036ad 100644
--- a/cord-single-playbook.yml
+++ b/cord-single-playbook.yml
@@ -7,7 +7,7 @@
 - name: Include vars
   hosts: head
   tasks:
-  - include_vars: vars/cord_defaults.yml
+  - include_vars: vars/cord_single_defaults.yml
   - include_vars: vars/cord.yml
   - include_vars: vars/cord_keystone.yml
 
@@ -48,4 +48,4 @@
     - docker-compose
     - simulate-fabric
     - onos-load-apps
-
+    - xos-start