sometime a stale nmbd or smbd process prevent start of samba.
this change should kill all processes.
Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org> Reviewed-by: Michael Tremer <michael.tremer@ipfire.org> Signed-off-by: Michael Tremer <michael.tremer@ipfire.org> Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>