client: fix ctdb_control() to be able to cope with CTDB_CTRL_FLAG_NOREPLY

client: fix ctdb_control() to be able to cope with CTDB_CTRL_FLAG_NOREPLY

This was apparently not used before in this context, and the bug hence
not detected. It becomes necessary when ctdb_local_schedule_for_deletion()
is called from a client ctdbd (the vacuuming child), hence needs to send
the SCHEDULE_FOR_DELETION control to its parent.

Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-By: Amitay Isaacs <amitay@gmail.com>
(cherry picked from commit e72a5e11845fe445baaee4730bb0bea8588ee9e3)