Use new API for auto-forwarders
Auto-forwarders and manual configuration now use the new API to get a
list of DNS servers. Manual installer refuses loopback, too.
See: https://pagure.io/freeipa/issue/8275
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>