Rename RH-TRUST to OS-TRUST

[Dolph Mathews]

The RH-TRUST patch (link below) should be renamed to OS-TRUST.

  https://review.openstack.org/#/q/I32b32fc5df8d8483ae8e99067f0655c13c6f520b,n,z

Related discussion on mailing list:

  http://lists.openstack.org/pipermail/openstack-dev/2013-March/006876.html

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: milestone-proposed
Review: https://review.openstack.org/25184

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/25184
Committed: http://github.com/openstack/keystone/commit/3e55be029c50eaf8567e7ca27b69a82363c00a4c
Submitter: Jenkins
Branch: milestone-proposed

commit 3e55be029c50eaf8567e7ca27b69a82363c00a4c
Author: Russell Bryant <email address hidden>
Date: Fri Mar 22 12:47:27 2013 -0400

    Rename trust extension (bug 1158980)

    Change trust extension from RH-TRUST to OS-TRUST so that the namespace
    being used is for OpenStack, as opposed to a contributing company. This
    is also more consistent with namespacing used in other OpenStack APIs.

    Some additional discussion about this is in this thread:
    http://lists.openstack.org/pipermail/openstack-dev/2013-March/006876.html

    Change-Id: I0fd869abe0f527c899808a4dde19dbd1fb6f32cd