1. Revamped drill connections.  With the improvement, all tests sharing the same schema will have one connection established and that single connection will be closed at the completion of all tests using it.
2. Fixed RpcException and connection refused bug as a result of the above revamping.
3. Re-organized packages.  There is mounting evidence against having two separate packages for the framework and the test client.  With the re-organization, all tests will run from the framework package directly.  Updated scripts and pom files to accommodate the changes.
4. Updated README.md.