KVM SR: remove 'password' output parameter from schema, as it disappeared.
KVM SR: Update schema to 04-draft.
KVM SR: Add support for NAT based networking (User Mode Network).

Note: Duplicates code, and heavy use of recipes.
KVM SR: add virtual-hard-drive-url support.
KVM SR: Factor runner templates.

Doing fast&dirty code is nice, but only if you don't maintain the code yourself.
KVM SR: Remove brain overhead of having a dict created from another dict.

First move to a clean KVM wrapper. And must faster maintenance/feature adding.
Merge branch 'kvm'
Release slapos.cookbook-0.79.