Updated openstack/openstack
Project: openstack/nova  6a23d68209b10d3e27ca364d3cc77aa123f4ff4d

Share migrations unit test between V2 & V2.1

This patch share unit tests of migrations between V2 & V2.1

Partially implements blueprint v2-on-v3-api

Change-Id: If3a2d745933a5bf2b77c852be0652fb10246d0fa