Updated openstack/openstack
Project: openstack/tempest  a88165af90202f152c861e50dc1b8329b554230e

tests the Keystone extensions V2 API

This patch adds the JSON/XML clients and tests for
Keystone discover extensions V2 API.

Change-Id: I9e869b9a5ba9302a77027581de7ae970f8d56305