Merge "aconfig: create flag.map storage file" into main am: 9b5d19bd am: 365a8024

Original change: https://android-review.googlesource.com/c/platform/build/+/2898261



Change-Id: I7281257e0f118e2687005ec0d09a1ec39964e817
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>