torture: Demonstrate the invalid lock order panic

torture: Demonstrate the invalid lock order panic

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13584

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Aug 21 02:33:05 CEST 2018 on sn-devel-144

(cherry picked from commit ec3c37ee53f21d8c0e80b1d3b3d7e95a4ac8e0bc)

Autobuild-User(v4-7-test): Karolin Seeger <kseeger@samba.org>
Autobuild-Date(v4-7-test): Thu Aug 23 15:48:56 CEST 2018 on sn-devel-144