refactor vBBU cord-3.0

Change-Id: I843cd7954862a38d05c918de101fb8635d15829c
diff --git a/xos/synchronizer/steps/vbbutenant_playbook.yaml b/xos/synchronizer/steps/vbbutenant_playbook.yaml
index e268dfb..de19598 100644
--- a/xos/synchronizer/steps/vbbutenant_playbook.yaml
+++ b/xos/synchronizer/steps/vbbutenant_playbook.yaml
@@ -4,4 +4,5 @@
   connection: ssh
   user: ubuntu
   become: yes
-  tasks:
+  vars:
+    - tenant_message: "{{ tenant_message }}"