Merge "Refactor metadata tool to support metadata generation for different...

Merge "Refactor metadata tool to support metadata generation for different rules." into main am: 432c41ec am: a41042a2 am: 9440806c

Original change: https://android-review.googlesource.com/c/platform/build/+/2833290



Change-Id: I9c4d483ab7d362fbf22aaffd286e5bb7663a34de
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>