anchor.diff:  - write-files
   - growpart
   - resizefs
  +- disk_setup
  +- mounts
   - set_hostname
   - update_hostname
   - update_etc_hosts
  
positive.code: - apt-configure
  - package-update-upgrade-install
  - landscape
  - timezone
  - puppet
  - chef
  
negative.code: 
  cloud_config_modules:
  - emit_upstart
  - ssh-import-id
  - locale
  - set-passwords
  