CORD-396 CORD-383 CORD-362 CORD-309 significant rework on networking configuration

Change-Id: Icb3cbac66b33265486ac236572874052fc643b8a
diff --git a/roles/head-node/files/compute-node.yml b/roles/head-node/files/compute-node.yml
index b8eb496..13d71e7 100644
--- a/roles/head-node/files/compute-node.yml
+++ b/roles/head-node/files/compute-node.yml
@@ -4,7 +4,7 @@
   remote_user: ubuntu
   tasks:
   - name: Include variables
-    include_vars: vars/compute-node.yml
+    include_vars: vars/compute-node-vars.yml
 
 - name: Configure compute hosts to use DNS server
   hosts: all
diff --git a/roles/head-node/files/do-ansible b/roles/head-node/files/do-ansible
index ae2efb9..0d91c31 100755
--- a/roles/head-node/files/do-ansible
+++ b/roles/head-node/files/do-ansible
@@ -22,4 +22,4 @@
 fi
 
 echo "ANSIBLE_ROLES_PATH=/etc/maas/ansible/roles ansible-playbook --private-key=/etc/maas/ansible/id_rsa -i $IP, /etc/maas/ansible/compute-node.yml $SKIP_TAGS $EXTRA_VARS" >> $LOG
-ANSIBLE_ROLES_PATH=/etc/maas/ansible/roles ansible-playbook --private-key=/etc/maas/ansible/id_rsa -i $IP, /etc/maas/ansible/compute-node.yml $SKIP_TAGS $EXTRA_VARS >> $LOG
+ANSIBLE_ROLES_PATH=/etc/maas/ansible/roles ansible-playbook --private-key=/etc/maas/ansible/id_rsa -i $IP, /etc/maas/ansible/compute-node.yml $SKIP_TAGS $EXTRA_VARS >> $LOG || exit $?