Make futures-test available to product and vendor am: 6638efa2c4 am: 7845187c63 am: b3c58b9fad am: 2a89154301

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/futures-test/+/2476410

Change-Id: I575a4ef7414944ad7b740755d623ddf518ff49b2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>