[art] Enable compilation of secondary dexes by default in tests

Previously tests used unoptimized secondary dex files (if they used a
secondary dex file). After this change all tests will use optimized
secondary dex files unless they explicitly opt out.

Right now the only tests that opt out of optimized secondary dex files
are:
- 130-hprof
  - At the moment unloading app images is not implemented (or it is and
    I couldn't find it / it's not working for this test), and this test
    relies on dex files properly getting unloaded.
- 141-class-unload
  - See explanation for 130-hprof
- 674-hiddenapi
  - Compilation skirts hidden API checks
- 719-dm-verify-redefinition
  - This test seems to compile secondary dex files itself, so we should
    disable the "automatic" compilation

Test: test/testrunner/testrunner.py -b --host
Bug: 149098478

Change-Id: I73592c597df629717db6d75eb977bf943bb6de72
6 files changed