Fact 637 add lsbminordistrelease

@ghoneycutt thank you for your contribution. While we could accept this patch as is, we would, after merging into facter, remove your addition of the Copyright on line 14 of this file as well as line 3 of spec/unit/lsbminordistrelease_spec.rb. This in accord with the Puppet Labs Contributor License Agreement. Rather than have us do this, could you please remove these lines?

Per the CLA, by contributing this code you agree to the following:

2. Grant of Copyright License. 

Subject to the terms and conditions of this Agreement, You hereby grant to Puppet Labs and to recipients of software distributed by Puppet Labs a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Your Contributions and such derivative works.

See  https://cla.puppetlabs.com/cla-text for additional clarification. Please let me know if you have questions.