SDAP: Improve a DEBUG message about GC detection
It was not entirely clear what the message means. We should improve the
debug message to make it clear that all or none attributes should be
replicated to the Global Catalog.
This patch can be reverted once we fix
https://pagure.io/SSSD/sssd/issue/3538 and only use the GC to look up
the entry DN, not the entry itself.
Reviewed-by: Fabiano FidĂȘncio <fidencio@redhat.com>