Check for environment in deploy resource on migrations

cr https://cr.amazon.com/r/3113941/
Don't override /etc/sudoers if not on EC2.
MySQL: Don't try to mount EBS volumes if they are not available.
Ganglia: Don't try to mount EBS volumes if they are not available.
Don't try to mount EBS volumes if they are not available.
Ignore build folder.
Merge branch 'master-chef-11.10' into mainline-chef-11.10