Revert "Revert submission from topic "separate-testing"."

This reverts commit 44d9a1d8.
Re-land testing for compatibility change gating. This should fix the art
buildbot breakage.

Bug: 140367850
Test: atest PlatformCompatGating
Test: art/tools/buildbot-build.sh --host
Change-Id: I1070e5e62aed67f1b09044b84674b06afc85c8cc