Added the unprotected root action support

ruby-runtime/lib/jenkins/model/unprotected_root_action.rb

@@ -0,0 +1,8 @@
+
+module Jenkins
+  module Model
+    class UnprotectedRootAction
+      include Jenkins::Model::Action
+    end
+  end
+end

ruby-runtime/lib/jenkins/model/unprotected_root_action_proxy.rb

@@ -0,0 +1,7 @@
+module Jenkins::Model
+  class UnprotectedRootActionProxy
+    include ActionProxy
+    include Java.hudson.model.UnprotectedRootAction
+    proxy_for Jenkins::Model::UnprotectedRootAction
+  end
+end