/**
* Checks {@link GridSystemProperties#GG_JETTY_PORT} system property and overrides default
* connector port if it present. Then initializes {@code port} with the found value.
*
* @param con Jetty connector.
*/
private void override(AbstractNetworkConnector con) {
String host = System.getProperty(GG_JETTY_HOST);
if (!F.isEmpty(host)) con.setHost(host);
int currPort = con.getPort();
Integer overridePort = Integer.getInteger(GG_JETTY_PORT);
if (overridePort != null && overridePort != 0) currPort = overridePort;
con.setPort(currPort);
port = currPort;
}
