Updated openstack/openstack
Project: openstack/nova  39b318353912a37950fc984b4cbae500771e7943

Convert v3 config drive plugin to v2.1

This patch changes v3 config drive plugin 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: Ieed7619f3cb310b25d157ebb07f24468aea1af9d