V2 to V3 token intermix for unscoped token is broken

[Guang Yee]

To reproduce the problem.

1) obtain an unscoped token using V2 API
2) try to validate the token with V3 API and Keystone produces the following stacktrace

Traceback (most recent call last):
  File "/home/gyee/projects/openstack/keystone/keystone/common/wsgi.py", line 236, in __call__
    result = method(context, **params)
  File "/home/gyee/projects/openstack/keystone/keystone/common/controller.py", line 104, in wrapper
    return f(self, context, **kwargs)
  File "/home/gyee/projects/openstack/keystone/keystone/auth/controllers.py", line 401, in validate_token
    token_ref.get('tenant'))
  File "/home/gyee/projects/openstack/keystone/keystone/auth/token_factory.py", line 231, in recreate_token_data
    project_id = project_ref['id']
TypeError: 'NoneType' object has no attribute '__getitem__'

Looks like we are making an assumption that project_ref is always valid.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/24729

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/24729
Committed: http://github.com/openstack/keystone/commit/75637be4bc160f25b130690e6d31ee3a66522ce6
Submitter: Jenkins
Branch: master

commit 75637be4bc160f25b130690e6d31ee3a66522ce6
Author: Guang Yee <email address hidden>
Date: Mon Mar 18 17:18:22 2013 -0700

    V2, V3 token intermix for unscoped tokens (bug 1156913)

    Make sure we check for tenant_ref before referencing it.

    Change-Id: If7918c0a9b2e99f8555e902e89166c6542105209