Open Stack

Hi, I'd like you to take a look at this patch for potential
DocImpact.
https://review.openstack.org/20565

Log:
commit f619da2405f8bb510a8ae2a88f6e4fcddb424ada
Author: Belmiro Moreira <moreira.belmiro.email.lists at gmail.com>
Date:   Sun Jan 27 17:57:31 2013 +0100

    Multi-tenancy isolation with aggregates
    
    A new scheduler filter that allows the creation of instances from
    specific tenants in selected aggregates.
    With this filter is possible to isolate tenants in a specific set
    of compute nodes (aggregates).
    
    If a host is in an aggregate that has the metadata key
    "filter_tenant_id" it can only create instances from that tenant(s).
    A host can be in different aggregates.
    If a host doesn't belong to an aggregate with the metadata key
    "filter_tenant_id" it can create instances from all tenants.
    
    Implements: blueprint multi-tenancy-aggregates
    DocImpact
    
    Change-Id: I119c809c54da9e9dc3ac506c02203d2d4422b06e