We should take backup of /etc/exports file as it seems executing this command re-create a new exports file by which we will loose the existing enteries from exports(if any). It would be better if this play appends the exports file instead of recreating it. Reported by: rhn-support-msufiyan https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/16.1/html/undercloud_and_control_plane_back_up_and_restore/configuring-the-backup-node_osp-ctlplane-br#annotations:49b69516-6f83-48b2-ada8-af9c5ccb2afb
according to records tripleo-ansible-0.5.1-1.20200914163930.el8ost has been released for 16.1 . Adding testonly flag
Test ok. Test will fail in case of duplicate exports (say, if created by a previous version)