Freeze capabilities JVMTI tests request by default.

Some capabilities might change the characteristics of the runtime when
they are gained (for example disabling the jit). We want to test in
all configurations when possible so freeze the default jvmti
capabilities given to jvmti tests to those that are known not to make
major runtime changes.

Test: ./test.py --host -j40
Change-Id: I90a8ad31f203590153ef53bc4950b2f3952b4970