Add Registrant API contact update action

Closes #849

app/views/epp/poll/poll_req.xml.builder

@@ -14,6 +14,21 @@ xml.epp_head do
         xml << render('epp/domains/partials/transfer', builder: xml, dt: @object)
       end if @object
     end
+
+    if @notification.action&.contact
+      # render(partial: 'epp/poll/contact',
+      #        locals: {
+      #          builder: xml,
+      #          contact: @notification.action.contact,
+      #          address_processing: Setting.address_processing
+      #        })
+      render(partial: 'epp/poll/action',
+             locals: {
+               builder: xml,
+               action: @notification.action
+             })
+    end
+
     render('epp/shared/trID', builder: xml)
   end
 end