trustor_user_id not available in v2 trust token

[OpenStack Infra]

https://review.openstack.org/101829
commit 16760cd13d9edd050ba8dc6c017cf3b221bd2deb
Author: wanghong <email address hidden>
Date: Mon Jun 23 16:34:53 2014 +0800

    trustor_user_id not available in v2 trust token

    The trust information in the v2 token is missing the trustor_user_id
    and impersonation values. This means you are unable to tell who gave
    you the trust.

    Change-Id: I7ed215b3353079d8ed9514c586d256c1226a2c19
    Closes-bug: #1331882
    DocImpact

[Gauvain Pocentek (gpocentek)]

This patch adds a 'impersonation' property in the v2 API, and I couldn't find it in our doc.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/231308

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/231308
Committed: https://git.openstack.org/cgit/openstack/api-site/commit/?id=81023950e5e3bf94d031d1bffb89bd636acba946
Submitter: Jenkins
Branch: master

commit 81023950e5e3bf94d031d1bffb89bd636acba946
Author: Atsushi SAKAI <email address hidden>
Date: Tue Oct 6 14:04:34 2015 +0900

    Add trust object to token for identity v2 API

      Issue itself is add attribute trustor_user_id.
      This patch adds
      trust object and its attribute trustor_user_id.

    Change-Id: I4b9bf24efc722465e3d4e406d1815849b5810945
    Closes-Bug: #1369032