Updated openstack/openstack
Project: openstack/nova  d9fa2450484ab754b159e5fd50a035b02ceef724

Change v3 aggregate API to v2.1

This patch changes v3 aggregate API to v2.1 and makes v2
unit tests share between v2 and v2.1.

The differences between v2 and v3 are described on the wiki page
https://wiki.openstack.org/wiki/NovaAPIv2tov3.

Partially implements blueprint v2-on-v3-api

Change-Id: I95372d49ffacd12bdc8e2f6b60628c17f70d0eba