Update package list

(cherry picked from commit 21be842c0f4422de0f5aa043a70424b617f12873)
Add qemu-kvm rpm to resolve dependency

(cherry picked from commit 764a0a2d747f7c9c886848b4b538eb29364c80b6)
Moved role constraints into model and removed edit deployment
Merge pull request #188 from tboerger/feature/constraint-move

Moved role constraints into model and removed edit deployment
Merge pull request #185 from vuntz/ubuntu-pkgs

Update package list
Removed the single assignment block from constraints

(cherry picked from commit abbfe22dd66fc20d4c292308d5bd0e612e6ec853)
Merge pull request #192 from vuntz/release/stoney/master

Removed the single assignment block from constraints