Comment 7 for bug 1078497

Reviewed: https://review.openstack.org/16191
Committed: http://github.com/openstack/keystone/commit/80d63c882c7b847a8b73cf1e2b0f587a25be4d5f
Submitter: Jenkins
Branch: stable/folsom

commit 80d63c882c7b847a8b73cf1e2b0f587a25be4d5f
Author: Vishvananda Ishaya <email address hidden>
Date: Tue Nov 13 15:34:00 2012 -0800

    Properly list tokens with a null tenant

    We store the tenant as a null value in json, so checking to see
    if it exists is not sufficient. This makes the check safer, checking
    for existance and not null before continuing.

    Fixes bug 1078497

    Change-Id: Ida1b958e5df6f93a30efae0d3f71df668751ff81