[#64650014] Backport Ruby Highline to Ubuntu Precise

Check in the source package for Ubuntu Utopic's Ruby Highline and backport it to Ubuntu Precise.

This is a dependency of Hiera eYAML, which I'll also be backporting in a future PR.

Source package downloaded from:
http://archive.ubuntu.com/ubuntu/pool/universe/r/ruby-highline/ruby-highline_1.6.20-1.debian.tar.gz