Remove two more unnecessary default arguments
Rust: Adds https

Rust has adopted SSL for their download links, so Homebrew can make the switch over now. See [this](https://github.com/rust-lang/rust/issues/16504) Rust Issue for further information.

Closes #31607.

Signed-off-by: Misty De Meo <mistydemeo@gmail.com>
Ansible 1.7.1.
ansible: update 1.7.1 bottle.