Open Stack

Hi, I'd like you to take a look at this patch for potential
SecurityImpact.
https://review.openstack.org/61916

Log:
commit 4e996ec0975a28f5ceabf8d77cefe460f576cabc
Author: Steve Martinelli <stevemar at ca.ibm.com>
Date:   Thu Dec 12 21:47:38 2013 -0600

    trustee unable to perform role based operations on trust
    
    There was a typo in a conditional that checked the trustor twice, instead
    of trustee and trustor. The typo was preventing a trustee from being
    able to list or get or check roles that were delegated.
    
    Also, removed the spurious check of is_admin from said conditional
    (_is_trustor_trustee_admin), and renamed it to _is_trustor_trustee.
    
    An additional check, to see if a trust existed, was removed since it
    was repeated unnecessarily.
    
    Added a test to cover the gap that was discovered in the bug report.
    
    SecurityImpact
    
    Change-Id: Id61e71cb3ea7c6bc51783af067fbbbe4c9bffafe
    Closes-Bug: 1261104