Merge "aconfig: move create flag info file api to aconfig_storage_write_api"...

Merge "aconfig: move create flag info file api to aconfig_storage_write_api" into main am: acfb82cf

Original change: https://android-review.googlesource.com/c/platform/build/+/3028943



Change-Id: I8d3b6f758ec3740928fc379d781a4e721c85a72e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>