ipatests: smoke test for server debug mode.
Add a smoke test to make sure the server can be set in debug mode
without issue.
Related: https://pagure.io/freeipa/issue/8891
Signed-off-by: François Cami <fcami@redhat.com>
Reviewed-By: Stanislav Levin <slev@altlinux.org>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>