Comment 4 for bug 1542463

Reviewed: https://review.opencontrail.org/16964
Committed: http://github.org/Juniper/contrail-puppet/commit/7ccfeaf524a5fb523c3717f9eff3baff0eea0583
Submitter: Zuul
Branch: master

commit 7ccfeaf524a5fb523c3717f9eff3baff0eea0583
Author: tsurendra <email address hidden>
Date: Sun Feb 7 11:39:11 2016 -0800

Closes-Bug: #1542463
When cmon_user is not present,removal of cmon_user fails.

Fix:
made unless clause to check for existence of cmon/root user.
Also changed galera_setup to use cluster_statr to detect existence of
existing galera_cluster.

Testing:
Verfied by deleting and adding a cluster at the first.

Change-Id: I906ef4c2e70ce6a90c26c03275885158b63033b5