Add beaker gems back for acceptance testing

Author: jeffbyrnes

Gemfile

@@ -37,7 +37,14 @@ group :development do
   gem "puppet-lint-version_comparison-check",                       require: false
   gem "rspec-json_expectations",                                    require: false
 end
+
 group :system_tests do
+  gem "beaker", '~> 4',                                         require: false
+  gem 'beaker-puppet', '~>1.0',                                 require: false
+  gem "beaker-docker",                                          require: false
+  gem "beaker-rspec",                                           require: false
+  gem 'beaker-puppet_install_helper',                           require: false
+  gem 'beaker-module_install_helper',                           require: false
   gem "puppet-module-posix-system-r#{minor_version}", '~> 1.0', require: false, platforms: [:ruby]
   gem "puppet-module-win-system-r#{minor_version}", '~> 1.0',   require: false, platforms: [:mswin, :mingw, :x64_mingw]
 end