Add description, homepage, and license to deb package

As I was installing vagrant 1.1 today I noticed that the package installer said "no description given". Upon further inspection I noticed a few more fields were blank.


% dpkg --info vagrant_x86_64.deb 
 new debian package, version 2.0.

 size 19853862 bytes: control archive=368 bytes.
        0 bytes,     0 lines      conffiles
        279 bytes,    11 lines      control
 Package: vagrant
 Version: 1.1.0
 __License: unknown__
 Vendor: @vmware-ubuntu-10-04-amd64
 Architecture: amd64
 Maintainer: HashiCorp <hello@hashicorp.com>
 Installed-Size: 63022
 Section: default
 Priority: extra
__Homepage: http://example.com/no-uri-given__
__Description: no description given__


I've added values to the hiera file for these fields and utilized them in the https://github.com/hashicorp/puppet-modules/pull/3 repo. The description is from the readme in the vagrant repo. Hopefully everything is in the proper place. I tried to copy the similar code. Let me know if it needs changing in any way.