More flexible EC2 user data classes.
Docs for defaultHadoopCoordinates.
Indexing: Allow null userData.
Docs for string-based EC2 userData.
Merge pull request #610 from metamx/ec2-user-data

More flexible EC2 user data classes.
[maven-release-plugin] prepare release druid-0.6.128
[maven-release-plugin] prepare for next development iteration