Murano policy documentation is lacking exact meaning for each rule

[Kirill Zaitsev]

It might be an overkill to specify every particular rule, but there are a few, that require explanations, namely:

   "get_package": "rule:default",
   "upload_package": "rule:default",
   "modify_package": "rule:default",
   "publicize_package": "rule:admin_api",
   "manage_public_package": "rule:default",
   "delete_package": "rule:default",
   "download_package": "rule:default",

   "list_environments_all_tenants": "rule:admin_api",

   "execute_action": "rule:default"

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/294277
Committed: https://git.openstack.org/cgit/openstack/murano/commit/?id=c7695d29b14b5a9a864eb53e635c5beff9ef02ad
Submitter: Jenkins
Branch: master

commit c7695d29b14b5a9a864eb53e635c5beff9ef02ad
Author: Steve Wilkerson <email address hidden>
Date: Thu Mar 17 14:20:18 2016 -0500

    Add descriptions for policy rules

    In order to make the policy entries more clear, we added
    short policy rule descriptons for the policy entries that may
    not be easily understood.

    Change-Id: I07d7b468113d3d063e17e4c1ecce1ba9f5bd9abb
    Co-Authored-By: Larry Rensing <email address hidden>
    Closes-Bug: #1551720