SDAP: skip builtin AD groups in sdap_save_grpmem()
While processing group memberships SSSD might accidentally save builtin
or other well known AD groups. With this patch those groups are skipped
similar as e.g. in sdap_save_group().
Resolves:
https://pagure.io/SSSD/sssd/issue/3610
Reviewed-by: Fabiano FidĂȘncio <fidencio@redhat.com>