Documentation updates
Missing qemu-utils in docs
Only 13.10 is supported right now, 14.04 is known to be broken in v0.1-rc2
qemu-img on 14.04 expects relative backing file to be in same folder
Fix broken libvirt tests
Fix libvirt tests not running on ec2
Documentation update
Don't return values that are null
Cleanup work dir
Add sudo
Run pip with sudo
Fix env vars from cattle rename