Update TEST_MAPPING am: bd8802d955 am: 27382bd5e7 am: 5fff2c7f37 am: 18bd2b94f4 am: ca64e7aedc

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/structopt-derive/+/1813981

Change-Id: Ifb30c9069b892bfe45a6b9216d11616cbc9ddd09