s3:dbwrap_ctdb: in ctdb_delete, send a SCHEDULE_FOR_DELETION control to local ctdbd

s3:dbwrap_ctdb: in ctdb_delete, send a SCHEDULE_FOR_DELETION control to local ctdbd

This way, the record will be scheduled for fast vacuuming.

This is sent with the NOREPLY flag, so ctd should not sent
a reply packet and samba does not expect one. Hence, it
is not important for the success of the db_ctdb_delete command
whether or not the ctdbd we are running against supports the
SCHEDULE_FOR_DELETION control.
(cherry picked from commit 6a3b6c8f7c14274e98c5c8e14ebf54ea260b2ecf)

Signed-off-by: Stefan Metzmacher <metze@samba.org>