Open Stack

Hi, I'd like you to take a look at this patch for potential
DocImpact.
https://review.openstack.org/28669

Log:
commit b7140e698d03add2b8bb659d4d6fb85f73f7f815
Author: gtt116 <gtt116 at 126.com>
Date:   Sat Feb 23 09:32:28 2013 +0000

    Add affinity availability zone scheduler filter.
    
    Create an new filter to schedule the instance on a same/different availability
    zone of a set of instances. And add some tests for the filter.
    
    DocImpact
    
    Implemented bp: different-availability-zone-filter
    
    Change-Id: I948d8cf6ad5bab8db82398fb3aa7797a49acdc5e