zdtm: Extend vim settings in zdtm.py

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

test/zdtm.py

 #!/usr/bin/env python2
-# vim: noet
+# vim: noet ts=8 sw=8 sts=8
 import argparse
 import glob
 import os