@Bean
    public ClusterZookeeperClient clusterZookeeperClient(final ClusterZookeeperProperties clusterZookeeperProperties) {
        int sessionTimeout = clusterZookeeperProperties.getSessionTimeout();
        int connectionTimeout = clusterZookeeperProperties.getConnectionTimeout();
        ClusterZookeeperConfig zkConfig = new ClusterZookeeperConfig(clusterZookeeperProperties.getUrl());
        zkConfig.setSessionTimeoutMilliseconds(sessionTimeout)
                .setConnectionTimeoutMilliseconds(connectionTimeout);
        ClusterZookeeperClient client = new ClusterZookeeperClient(zkConfig);
        client.start();
        return client;
    }
register zkClient in spring ioc.

@param clusterZookeeperProperties the zookeeper configuration
@return ClusterZookeeperClient {@linkplain ClusterZookeeperClient}
shenyu-admin/src/main/java/org/apache/shenyu/admin/config/ClusterZookeeperConfiguration.java