[Grid] Changing host header before forwarding commands to the driver

Fixes #8326 and fixes #7821
ChromeDriver will reject requests if the host header contains something different
than localhost and no whitelistedIps are configured.
This does not affect other drivers.

java/server/src/org/openqa/selenium/grid/node/ProtocolConvertingSession.java

@@ -61,6 +61,9 @@ protected ProtocolConvertingSession(
 
   @Override
   public HttpResponse execute(HttpRequest req) {
+    String host = "host";
+    req.removeHeader(host);
+    req.addHeader(host, String.format("%s:%s", getUri().getHost(), getUri().getPort()));
     HttpResponse res = handler.execute(req);
     if (req.getMethod() == DELETE && killUrl.equals(req.getUri())) {
       stop();