Merge "Add `--coverage` command-line argument to Atest." am: 89fd34aa7c

Original change: https://android-review.googlesource.com/c/platform/tools/asuite/+/2172950

Change-Id: Iaf8f898207b8ccaa0bcc78aae0db7e9b4d5c4cab
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>