use DOWNLAOD_PATH from common_lib for artifact downloads am: 6750a5a20c Original change: https://googleplex-android-review.googlesource.com/c/kernel/tests/+/38886937 Change-Id: If004cf30e4f7f9c3fe7ea8225887e3547b03114c Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>