The graceperiod plugin was only being enabled on new installations. Enable also on upgrade. Loading a new plugin requires a restart. Do so if a new one is configured. Fixes: https://pagure.io/freeipa/issue/1539 Signed-off-by: Rob Crittenden <rcritten@redhat.com> Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com> Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>