Updated openstack/openstack
Project: openstack/nova  0f06ba1128d7011b96d12bb5fe5eee2170163b50

ec2: Add S3ImageMapping object

Add a nova object for another ID-UUID mapping used in the EC2 API.
This object will allow the removal of the last bit of direct db api
usage by the EC2 API code.

Part of blueprint convert-ec2-api-to-use-nova-objects

Change-Id: Icf84f2d5a50ce4c78ee7f51db8e6a2b0276afbb2