run-test: Convert from bash to python. am: d5f69e241e am: d6ef626cd8 am: 1e457398be am: 5dd7102963

Original change: https://android-review.googlesource.com/c/platform/art/+/2239595

Change-Id: Ia9f46a4996de94c98fa7d152d25dc619da543e87
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>