Merge "Update checkowners.py to support python3" am: 2f4e0217 am: 982f400a...

Merge "Update checkowners.py to support python3" am: 2f4e0217 am: 982f400a am: 6542d0fc am: 8208530f am: c07b1743

Original change: https://android-review.googlesource.com/c/platform/build/+/2053986



Change-Id: I01e55097fc677a0d5b5d3075601909c6c1396a0f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>