Merge "aconfig_storage: create aconfig storage c++ flag value write api" into...

Merge "aconfig_storage: create aconfig storage c++ flag value write api" into main am: aa028764 am: 7708e2bc

Original change: https://android-review.googlesource.com/c/platform/build/+/3004210



Change-Id: Id44358c9e34bada0613ce420ed2311b7c7c5f9fc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>