Bump to current Ubuntu AMI
Track the latest OAB

OAB tracks a moving target, so we need to track a moving OAB
Fix depracated variable access method in ruby template
Modify grep command to check file
Update S3 bucket that templates live in
Second incarnation of this module

* The Amazon stuff doesn't belong here and should live at ec2neo
* Some modern puppeti code does belong here
* Now depends on other forge modules