Open Stack

Hi, I'd like you to take a look at this patch for potential
DocImpact.
https://review.openstack.org/33657

Log:
commit aada048b165c2ca70a986b4adf1a635b05025992
Author: He Jie Xu <xuhj at linux.vnet.ibm.com>
Date:   Tue Jun 25 16:07:23 2013 +0800

    Add validation of available_zone during instance create
    
    When using nova boot command with --availability_zone parameter and only
    input the zone without host and node, now will check if the zone is
    available, if not, then return an error message directly rather than
    create an instance with an Error state
    
    Add a get_only_available option to function get_availability_zones
    
    To disable available zone, one should have to disable both the scheduler
    filter and the API extension, if the API extension is not disabled, this
    patch will still do the validation of available zone
    
    DocImpact
    
    Change-Id: Ibff117d48b60ac4f4ae33e3b3d2840d7313ce0d4

Automatically generated bug (please review):
https://bugs.launchpad.net/bugs/1202073