Fix message headers that weren't set in the http response headers.

Author: luan-viafoura

vertx-web-api-service/src/main/java/io/vertx/ext/web/api/service/impl/RouteToEBServiceHandlerImpl.java

@@ -53,7 +53,9 @@ public void handle(RoutingContext routingContext) {
         if (op.getStatusMessage() != null)
           response.setStatusMessage(op.getStatusMessage());
         if (op.getHeaders() != null)
-          op.getHeaders().forEach(h -> response.putHeader(h.getKey(), h.getValue()));
+          response.headers().addAll(op.getHeaders());
+        if (res.result().headers() != null)
+          response.headers().addAll(res.result().headers());
         if (op.getPayload() != null)
           response.end(op.getPayload());
         else