Migrate to cargo_embargo. am: b44adca430

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/clap/+/2826471

Change-Id: I34d526bec99452822f75e06a2f66c898bbe26e2d
Signed-off-by: Automerger Merge Worker <[email protected]>