Merge ../product-and-community
Added devops - library for managing virtual environment
Implemented devops basic environment build/destroy
Updated devops/xml to support getting node's text
Updated devops: better unique name generation, networks, mac_address detection
Fixed devops VM memory units
vnc added to devops node
Updated devops libvirt driver to support libvirt 0.9.8
cdrom added to devops node
Added exception class for devops libvirt errors
[devops] Added tests for libvirt's XML: handling memory and cdrom
[devops] Converted models from containers to active models
changes for dhcp with range allocation
[devops] Added text-to-scancodes conversion module; addded send_keys_to_node driver's method.
[devops] Fixed bug with environment work dir wrong variable name
[devops] Store disk size in bytes
[devops] Add cdrom to boot order if specified
[devops] Convert scancodes to libvirt's format (no key release codes)
[devops] Implemented sending keys to node
[devops] Implemented sample admin node creation script