Merge "aconfig: add a new aconfig storage file flag listing api" into main am:...

Merge "aconfig: add a new aconfig storage file flag listing api" into main am: c0102331 am: a8d8b351

Original change: https://android-review.googlesource.com/c/platform/build/+/3065243



Change-Id: I6069f7dc83ea8f7d8f26ec89601134f83b31fbc0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>