Updated openstack/openstack
Project: openstack/tempest  e4119b664dca51f0d055553fcf540921b90186ae

remove xml_utils and all things that depend on it

This rips out xml_utils, and all the things that depend on it, which takes
out a huge amount of the xml infrastructure in the process.

Change-Id: I9d40f3065e007a531985da1ed56ef4f2e245912e