Open Stack

Hi, I'd like you to take a look at this patch for potential
DocImpact.
https://review.openstack.org/28583

Log:
commit a3042c33b9f9c27aa1e93f29ae63f037d577feb7
Author: Andrew Melton <andrew.melton at rackspace.com>
Date:   Wed May 8 13:52:39 2013 -0400

    Add policy to enable showing of deleted instances
    
    As instances are soft deleted, instance data may still be
        available in the database. This feature allows users to
        retrieve this data if it's available. As it is implemented
        as a policy, it can be restricted to only certain users/roles.
    
    When enabled, a show call on a deleted instance will return
        what data is available instead of a 404 Not Found. If the
        soft deleted data is purged from the database, a 404 Not Found
        will be returned to the user.
    
    When disabled, a show call on a deleted instance will maintain
        it's normal behavior, thus returning a 404 Not Found.
    
    DocImpact
    
    Implements bp show-deleted-instances
    
    Change-Id: If9e1f2fe1d7d7691a13aaa0d7c45dc126bee64c7