vagrant now has access to the wd lib

Sharing this so that we get the effect of having the most recent wd lib
installed and ready inside the vagrant vm when running integration specs
(primarily for the 'whiskey_disk/helpers' library specs).

scenarios/setup/vagrant/Vagrantfile

@@ -1,6 +1,7 @@
 Vagrant::Config.run do |config|
   config.vm.box = "base"
   config.vm.share_folder "deployment", "/opt/deploy", "deployed"
+  config.vm.share_folder "wd_lib", "/opt/lib", "../../../lib"
 
   config.vm.provision :puppet do |puppet|
     puppet.manifests_path = "manifests"