Allow to specify a pki.ini overlay file on the command line. The override
file can be used to override pkispawn settings.
Fixes: https://pagure.io/freeipa/issue/5608
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Fraser Tweedale <ftweedal@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
