Merge "aconfig: create java libraries for aconfig proto" am: a2d93ae1 am: c522f116

Original change: https://android-review.googlesource.com/c/platform/build/+/2648125



Change-Id: I4d78ff64d6a9d935ab5e8f945ef925f9adaecb5a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>