added debug to config for ansible -v's and changes how roles are copied to head node

Change-Id: Ib5a5346cf37d95a689d0d7fe354b4a394d0bb241
diff --git a/roles/head-node/files/compute-node.yml b/roles/head-node/files/compute-node.yml
index 4a6a50d..7fb41f0 100644
--- a/roles/head-node/files/compute-node.yml
+++ b/roles/head-node/files/compute-node.yml
@@ -1,4 +1,4 @@
 - hosts: all
   remote_user: ubuntu
   roles:
-    - {{ provision.role }}
+    - compute-node