python/tests: add tests for smb notify and the dependency to the TRAVERSE privilege

python/tests: add tests for smb notify and the dependency to the TRAVERSE privilege

The easiest way to run this against Windows was to use a domain
controller and configure an enforce group policy and grant the
"Bypass Traverse Checking" only to the "BUILTIN\Administrators" group.
(Note that "LOCAL SERVICE" and "NETWORK SERVICE" are always added in
the local security policy.

The test runs like this:

  SMB_CONF_PATH=/dev/null \
  SERVER=172.31.9.188 \
  TARGET_HOSTNAME=w2012r2-188.w2012r2-l6.base \
  USERNAME=administrator \
  PASSWORD=A1b2C3d4 \
  NOTIFY_SHARE=torture \
  USERNAME_UNPRIV=ldaptestuser \
  PASSWORD_UNPRIV=a1B2c3D4 \
  python/samba/tests/smb-notify.py -v -f SMBNotifyTests

Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>

Signed-off-by: Björn Baumbach <bb@sernet.de>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>