CVE-2021-3670 ldap_server: Clearly log LDAP queries and timeouts

This puts all the detail on one line so it can be searched
by IP address and connecting SID.

This relies on the anr handling as otherwise this log
becomes the expanded query, not the original one.

RN: Provide clear logs of the LDAP search and who made it, including
a warning (at log level 3) for queries that are 1/4 of the hard timeout.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14694



Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>

Autobuild-User(master): Douglas Bagnall <dbagnall@samba.org>
Autobuild-Date(master): Thu Nov 25 02:30:42 UTC 2021 on sn-devel-184