DRILL-5260: Extend "Cluster Fixture" test framework
- Config option to suppress printing of CSV and other output. (Allows
printing for single tests, not printing when running from Maven.)
- Parsing of query profiles to extract plan and run time information.
- Fix bug in log fixture when enabling logging for a package.
- Improved ZK support.
- Set up the new CTTAS default temporary workspace for tests.
- Clean up persistent storage files on disk to avoid CTTAS startup
failures.
- Provides a set of examples for how to use the cluster fixture.
closes #753
