[PATCH] Reduce resource use during traffic_packet test

[Jeremy Allison]

On Mon, May 21, 2018 at 02:32:31PM +1200, Andrew Bartlett via samba-technical wrote:
> This matches similar patches done elsewhere in the selftest system and
> ensures that the server-side LDAP process disconnects as soon as
> possible.
> 
> Please review/push!

LGTM. Pushed (even a python novice like myself can see this one is
a no-brainer :-).