Preserve response status code when translating from internal to servlet API

Author: jleyba

java/server/src/org/openqa/selenium/remote/server/DriverServlet.java

@@ -236,6 +236,7 @@ private static HttpRequest createInternalRequest(HttpServletRequest servletReque
 
   private void sendResponse(HttpResponse response, HttpServletResponse servletResponse)
       throws IOException {
+    servletResponse.setStatus(response.getStatus());
     for (String name : response.getHeaderNames()) {
       for (String value : response.getHeaders(name)) {
         servletResponse.addHeader(name, value);