Add os-ctl-vip address to ctl nodes

Root cause:
When we doing upgrade from release without FQDN names we got
authorization failed error when source keystonercv3 file.

We add os-ctl-vip address to ctl nodes in ``/etc/hosts`` file.

Change-Id: I57bae5f18b8e0c8f9273701b43c789e3da56196c
Related-Prod: PROD-31397
1 file changed