Increase MIN_DOMAIN_LEVEL to DOMAIN_LEVEL_1
With increasing the minimal domain level to 1 ipa-replica-install will
refuse to install if the domain has domain level 0.
See: https://pagure.io/freeipa/issue/7669
Signed-off-by: Thomas Woerner <twoerner@redhat.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>