Ceph ansible: take-over-existing-cluster.yml changes complete old original ceph.conf in all of Ceph nodes including RGW nodes.

Environment

• Red Hat Ceph Storage 1.3.z
• Red Hat Ceph Storage 2.y

$ cat installed-rpms | grep ansible
ansible-2.2.1.0-1.el7.noarch                                
ceph-ansible-2.1.9-1.el7scon.noarch