Need to change default policy - users should upload packages by default

[Ekaterina Chernova]

Now regarding policy settings only admin can upload packages.

Need to change the default behavior.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/170126

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/170126
Committed: https://git.openstack.org/cgit/stackforge/murano/commit/?id=4732a4dec5e905b9deb9a6c3e2946acf38e864bb
Submitter: Jenkins
Branch: master

commit 4732a4dec5e905b9deb9a6c3e2946acf38e864bb
Author: Ekaterina Chernova <email address hidden>
Date: Thu Apr 2 16:39:13 2015 +0300

    Update default policy settings

    Also, there were some issues with policy:
    * 'publicize_image' instead of 'publicize_package';
    * corresponding actions have different names;
    * user could not upload packages by default;
    * user could mark package public/unpublic;
    * user could delete pablic packages.

    Change-Id: I5459016a4e7401b58fcb343e40d0047a4959b7df
    Closes-Bug: #1439240
    Closes-Bug: #1436289