CORD-706: Bug fixes involving vSG synchronizer

Change-Id: I81bd4ea828c9598bf94c32cad7876635ff97e74f
diff --git a/xos/synchronizer/steps/sync_vcpetenant.yaml b/xos/synchronizer/steps/sync_vcpetenant.yaml
index 880895e..aed264c 100644
--- a/xos/synchronizer/steps/sync_vcpetenant.yaml
+++ b/xos/synchronizer/steps/sync_vcpetenant.yaml
@@ -2,8 +2,8 @@
 - hosts: {{ instance_name }}
   gather_facts: False
   connection: ssh
-  user: ubuntu
-  sudo: yes
+  become_user: ubuntu
+
   vars:
       cdn_enable: {{ cdn_enable }}
       dnsdemux_ip: {{ dnsdemux_ip }}