Deliver all_release_configs.json as a build artifact am: 6b081071

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/+/27562359



Change-Id: I17c2026f2d597525d872db8b07799c064346aa06
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>