Tenant in v2 token response has parent_project_id

[Brant Knudson]

When I get a token using the v2 API, the tenant now has "parent_project_id". The parent_project_id shouldn't be there in a v2 token, and probably not in a v3 token either. This is an unnecessary field and it makes the tokens larger than they need to be.

RESP BODY: {"access": {"token": {"issued_at": "2015-02-13T02:13:59.720007", "expires": "2015-02-13T03:13:59Z", "id": "1d5e975fdec24bf99619eeffb97092df", "tenant": {"parent_id": null, "enabled": true, "description": null, "name": "demo", "id": "3824a1c2bdfb4d16a1ece8bd7f0d5950"}, "audit_ids": ["4vf4yakSQJefgVu4Wq6Now"]}, "serviceCatalog": "<removed>", "user": {"username": "admin", "roles_links": [], "id": "a5e16a48e3dd4c8583abf6778ceb7c22", "roles": [{"name": "admin"}], "name": "admin"}, "metadata": {"is_admin": 0, "roles": ["f1ff6d91af5d4ebaba7b0f80ab95692c"]}}}

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/156867

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/156867
Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=253c13f9f0942114a16ee17d65febace940aaf86
Submitter: Jenkins
Branch: master

commit 253c13f9f0942114a16ee17d65febace940aaf86
Author: lin-hua-cheng <email address hidden>
Date: Tue Feb 17 18:41:09 2015 -0800

    Remove parent_id in v2 token response

    Identity v2 api should be not be aware of hierarchical projects,
    so the parent_id should not be included in the token response.
    This is unnecessary data being sent making the token larger.

    Change-Id: I9cc5a00d4bd9f4c5232393c8dfb19a44fd121721
    Closes-Bug: #1421668