Pin to working Windows beaker and beaker-rspec

* No longer need to use fork! Work has been pushed upstream properly
* Update sync file with changes
* Bump to 5.4.0 beaker-rspec to fix Powershell issue (voxpupuli/beaker-rspec#77)

.sync.yml

@@ -3,14 +3,13 @@ Gemfile:
   supports_windows: true
   required:
     ':system_tests':
-      - gem: beaker-rspec
-        git: https://github.com/petems/beaker-windows.git
-        ref: 38227e3bec946dbd52ac4aece8d28af360a33cc4
       - gem: beaker
-        git: https://github.com/petems/beaker-rspec-windows.git
-        ref: d42d1b83b8de9c8b76fb5a19c859a3e71eeab28a
-      - gem: beaker-puppet_install_helper
+        version: '2.43.0'
+      - gem: beaker-rspec
+        version: '5.4.0'
       - gem: winrm
+        version: '1.8.1'
+      - gem: beaker-puppet_install_helper
 spec/spec_helper_acceptance.rb:
   windows: true
 spec/acceptance/nodesets/centos-511-x64.yml:

Gemfile

@@ -40,15 +40,9 @@ group :development do
 end
 
 group :system_tests do
-  gem 'winrm'
-  gem "beaker",
-    :git => 'https://github.com/petems/beaker-windows.git',
-    :ref => 'd42d1b83b8de9c8b76fb5a19c859a3e71eeab28a',
-    :require => false
-  gem "beaker-rspec",
-    :git => 'https://github.com/petems/beaker-rspec-windows.git',
-    :ref => 'd96cff5fc937efe1dca03c6ea3c236bf4c7337ab',
-    :require => false
+  gem 'winrm', '1.8.1'
+  gem 'beaker', '2.43.0'
+  gem 'beaker-rspec', '5.4.0'
   gem 'beaker-puppet_install_helper',  :require => false
 end