Add helios package

This package supplies the command line executable jar for
Helios, a Docker container orchestration platform developed
and open-sourced by Spotify.

https://github.com/spotify/helios
@mikemcquaid @adamv @mistydemeo If I removed the JVM options here per @mikemcquaid's [recommendation](https://github.com/Homebrew/homebrew/pull/33656#discussion_r19657707), would that work for you guys?