Config#execute! returns the newly loaded configuration

lib/vagrant/config.rb

@@ -29,6 +29,7 @@ module Vagrant
       def execute!
         run_procs!(config)
         config.loaded!
+        config
       end
     end
   end

test/vagrant/config_test.rb

@@ -78,6 +78,12 @@ class ConfigTest < Test::Unit::TestCase
       Vagrant::Config.execute!
       assert Vagrant::Config.config.loaded?
     end
+
+    should "return the configuration on execute!" do
+      Vagrant::Config.run {}
+      result = Vagrant::Config.execute!
+      assert result.equal?(Vagrant.config)
+    end
   end
 
   context "base class" do