Xfail test for sssd < 2.3.0
This fix is available in sssd 2.3.0+. On older version
test will fail. Hence added xfail.
Signed-off-by: Mohammad Rizwan <myusuf@redhat.com>
Reviewed-By: Anuja More <amore@redhat.com>
Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>