(SIMP-1850) Updates for the 6.X build

* Updated the test suites
* Updated the package list
* Updated the Gem releases
* Added spec tests for the Puppetfiles

SIMP-1850 #comment Start of the 6.0.0-Alpha release

Change-Id: I7f8e684186650968ec5fdab3dc47a3e4b4cec7a8

.fixtures.yml

@@ -1,4 +1,4 @@
 ---
 fixtures:
-  repositories:
-    simp: "git://github.com/simp/pupmod-simp-simp"
+  symlinks:
+    garbage: "#{source_dir}/spec/fixtures/modules"

Gemfile

@@ -24,7 +24,7 @@ gem 'coderay'
 gem 'puppet', puppetversion
 gem 'puppet-lint'
 gem 'puppetlabs_spec_helper'
-gem 'simp-rake-helpers', '~>3.0', :git => 'https://github.com/trevor-vaughan/rubygem-simp-rake-helpers', :branch => 'SIMP-1537'
+gem 'simp-rake-helpers', '~>3.0'
 gem 'simp-build-helpers', '>=0.1.0'
 gem 'parallel'
 gem 'dotenv'