update: fix var register
update: fix var register

Even if the task is skipped, ansible registers the var as 'skipped' so
this task the task using this variable for its next usage.

Signed-off-by: Sébastien Han <62d754cc350e84d3b1c32ae79f976f5348e74a40@redhat.com>

fgal/ceph-ansible,ceph/ceph-ansible,font/ceph-ansible,fgal/ceph-ansible,font/ceph-ansible,ceph/ceph-ansible,jtaleric/ceph-ansible,travmi/ceph-ansible,travmi/ceph-ansible,jtaleric/ceph-ansible