Create VM for vitrage function demonstration

In host

$ sudo apt -y install uvtool
$ uvt-simplestreams-libvirt sync release=trusty
$ source vitrage.rc
$ vitrage-create
$ vitrage-ssh

In guest

$ curl -L https://raw.githubusercontent.com/openzero-zte/vitrage-demo/master/install|sudo bash

See also https://help.ubuntu.com/lts/serverguide/cloud-images-and-uvtool.html