Put 100% of ART run-tests in `TEST_MAPPING` group `mainline-presubmit`.

Include remaining ART run-tests into the `mainline-presubmit` test
group. This progressive rollout is to make sure introducing ART
run-tests to this test group won't disturb/break Android presubmits.

Output of `art/test/utils/regen-test-files`:

  $ art/test/utils/regen-test-files
  Generated Blueprint files for 625 ART run-tests out of 929 (67%).
  Generated TEST_MAPPING entries for 376 ART run-tests out of 929 (40%):
    376 tests (100%) in `mainline-presubmit` test group.
    376 tests (100%) in `presubmit` test group.
    0 tests (0%) in `postsubmit` test group.

(cherry picked from commit 3d05e61a420e499bfc9221445237c964e0a8aa63)

Test: Rely on TreeHugger presubmits
Bug: 178703264
Bug: 152374989
Change-Id: I58c2ad4669905d2fb22bb55d549f616de2266ba4
Merged-In: I58c2ad4669905d2fb22bb55d549f616de2266ba4
2 files changed