Merge "Convert fileslist_util.py to python 3" am: f99edd9f am: fe0e7f17

Original change: https://android-review.googlesource.com/c/platform/build/+/2267709



Change-Id: I833d1e4a7b439f575c8a7165185cb9b307916ea5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>