Add an option for passing extra result reporters to Tradefed am: d8f8dc9778 am: 456f07d60e

Original change: https://googleplex-android-review.googlesource.com/c/platform/tools/asuite/+/18451311

Change-Id: I8656c0da7984b5d62c3c914855537440653d0c56
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>