Teach package_barclamp.rb how to make deb and rpm packages for barclamps.

We now know how to make very stupid .deb and .rpm packages.

Next steap, teach the install process how to install from them.

We still generate tarballs for package caches, though.
Teach build_crowbar how to spin a build using OS native barclamp packages.
Teach make-pkg how to learn about required packages in crowbar.yml.
Merge pull request #1689 from VictorLowther/master-5b598c8110f085ef576877b660248715e65e9054

First pass at adding native package support to Crowbar [2/2]