add missing references to policy files

In local_settings.py.example, there were references
to policy files missing. When changing policy file
location, those are required.

Change-Id: I60e2271bb9d323f484524a448d28e40a5ace69b3
Closes-Bug: #1315739
(cherry picked from commit 8d020e9f771f912cb8e54344d6c6f278e53117cf)
Merge "add missing references to policy files" into stable/icehouse