Merge "Refresh Android.bp, cargo2android.json, TEST_MAPPING." am: 99dc3539da am: 12984bfa87

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/structopt-derive/+/1912697

Change-Id: Ie7e9f0f5a869c4f9bbd1f38eaa18deff8d01bd38