First cut of all the changes
Changing the groupIds for all the sub-module poms.
Renaming package names on ETL pack. Successful test run.
Resolving merge conflicts
cdap-api is already dependent on tephra. So removing the dependencies on tephra specifically.
Changing pack to Pack
Fixing the underlying of the header text
Merge pull request #11 from caskdata/feature/CDAP-646

CDAP-646 Standardizing on package names, copyright, etc.