@BeforeClass
  public static void setup() throws Exception {
    ambryRestServer = new RestServer(FRONTEND_VERIFIABLE_PROPS, CLUSTER_MAP, new LoggingNotificationSystem(),
        SSLFactory.getNewInstance(new SSLConfig(FRONTEND_VERIFIABLE_PROPS)));
    ambryRestServer.start();
    plaintextNettyClient = new NettyClient("localhost", PLAINTEXT_SERVER_PORT, null);
    sslNettyClient = new NettyClient("localhost", SSL_SERVER_PORT,
        SSLFactory.getNewInstance(new SSLConfig(SSL_CLIENT_VERIFIABLE_PROPS)));
  }
Sets up an Ambry frontend server.
@throws Exception
ambry-frontend/src/integration-test/java/com/github/ambry/frontend/S3IntegrationTest.java