Merge "Convert fileslist_util.py to python 3" am: f99edd9f am: fe0e7f17 am: 653c31cc

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



Change-Id: I0163916edc9f12612c354d4d4626f2d9bf4d978e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>