policy.json: Allow one to manage them from the puppet module

This commit allow a deployer to manage the policies via this module
It relies on augeas to change only the policy needed. The init takes
a hash of policies and apply them.

Change-Id: I6ee27a1c4c26c73f5954e6462097fb5ed4dbb7ea
Fix glance_image for local images

When trying to upload an image from the local file system, the
resource provider was failing. Fixing it to use the --file option
for the glance client instead of going through stdin.

Change-Id: Ic6bade025d28e2eb33f86c2d4421b65d06e8274c
Merge "policy.json: Allow one to manage them from the puppet module"
Merge "Fix glance_image for local images"