DRILL-2903: General improvements to tests in TestDrillbitResilience
+ Added RepeatTestRule to tests that are flaky
+ Added Controls.Builder to create controls string in tests
+ Added @Ignore to failing tests (filed JIRAs)
Other fixes:
+ Added @Override to ScanBatch#close to avoid potential bugs
+ Added docs link in ProtobufLengthDecoder
+ Fixed logging issue in CountDownLatchImpl
