Stop using a custom libvirt package to run the test suite
Originally created by @intrigeri on #6314 (Redmine)
We currently need to patch libvirt to add support for the removable bit for USB devices. We’ve implemented this support and have merged it upstream. libvirt 1.1.3 will have it.
Feature Branch: test/rjb-integration
Parent Task: #6315 (closed)