Merge "add script to help override flag value locally" into main am:...

Merge "add script to help override flag value locally" into main am: 6aa03002 am: 37bee01a am: 3b01a67a

Original change: https://android-review.googlesource.com/c/platform/build/+/2783484



Change-Id: Ic9f94959e91a5599fe2a371d3c122bfdfcaa86dc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>