Merge "Add a Python package for fetch_artifact." am: 9af4718984 am: 3a4e649a1f

Original change: https://android-review.googlesource.com/c/platform/development/+/2056220

Change-Id: I9b1c3f87a0b4f85288d444fe14403ba04df715ad
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>