Rakefile: platform_family is a known attribute
Rakefile: syntax-check all files
Rakefile: make it work with Ruby 1.8
Handle version lock changes for Amazon Linux
Be a bit more strict with the ruby version parsing.
Fix passenger module path for newer versions.
Generate a motd when synchronizing stack changes.
Avoid unnecessary autofs restarts.

Do not re-write /etc/auto.master if not needed.
Make mkfs execute resource unique and wait for the LVM device safety to be available.
Use the amazon linux packages when installing haproxy
Renamed nodejs packages, prefixed package names with opsworks.
Renamed ruby packages, prefixed package names with opsworks.