Edit of test classifications

Our test classifications have drifted. You can see for yourself running each of the small/medium and large test suites. See test complete times. See how even some large tests should be small and vice versa.

The more small tests we can run inside the single JVM, the faster we'll get through the build. Tests that are Medium start their own JVM for each test. Tests that are Medium but only last a second or two are expensive and should be aggregated with other single, short tests to amortize the JVM startup.

Anyways, let me edit the test categories and try and clean them up some.