updating ec2_info with a walking function to get all the metadata
updating ec2_info with a walking function to get all the metadata
fixing issue with leading slashes on URIs
dirty as hell, really need to clean this up
refactoring the recursive function so that the code is more concise.
Removed the return value on _call_aws so empty results are returned as None
Updating comments.
Removing unneccessary imports as previous code removed that used these.
Merge pull request #37 from nigeldunn/master

Reworked the EC2 grain to recursively read the EC2 metadata