1. Added more support for performance testing, including Kunal's scripts and an additional test class as well framework level implementations.
2. Constructed JDBC connection URL programmatically.  This dispenses with the necessity for the command line parameter.  However, the implementation is being commented out in wait for the fix from drill to be ready, and in its place a hack is being used that fetches the value from command line.  This parameter is required till the fix is in.
3. Enabled "root" level test case discovery from "resources".
4. Fixed the problem of datasource json files distracting test case collection.