Add tests for ipa-restore with DM password validation check
ipa-restore should validate the DM password before executing
the restoration. This adds two test cases:
1. Restore with a bad DM password
2. Restore with dirsrv down so password cannot be checked
Related: https://pagure.io/freeipa/issue/7136
Signed-off-by: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>