## 问题描述
使用如下方式配置RegistryConfig bean时

```java
    @Bean
    public RegistryConfig registryConfig() {
        RegistryConfig registryConfig = new RegistryConfig();
        registryConfig.setProtocol("zookeeper");
        registryConfig.setAddress("localhost");
        registryConfig.setPort(2181);
        return registryConfig;
    }
```

提示无法与zookeeper建立连接，调试代码发现，zookeeper链接为

`zookeeper://localhost:9090/ConfigCenterConfig?check=true&config-file=dubbo.properties&group=dubbo&highest-priority=false&namespace=dubbo&timeout=3000`

使用了9090端口，未使用2181端口，registryConfig.setPort()不生效。

对比测试，使用registryConfig.setAddress("localhost:2181")方式可以生效。


/**
     * Set the {@link ApplicationConfig}
     *
     * @param applicationConfig the {@link ApplicationConfig}
     * @return current {@link DubboBootstrap} instance
     */
    public DubboBootstrap application(ApplicationConfig applicationConfig) {
        configManager.setApplication(applicationConfig);
        return this;
    }
    
    /**
     * Add an instance of {@link RegistryConfig} with {@link #DEFAULT_REGISTRY_ID default ID}
     *
     * @param consumerBuilder the {@link Consumer} of {@link RegistryBuilder}
     * @return current {@link DubboBootstrap} instance
     */
    public DubboBootstrap registry(Consumer<RegistryBuilder> consumerBuilder) {
        return registry(DEFAULT_REGISTRY_ID, consumerBuilder);
    }
    /**
     * Add an instance of {@link RegistryConfig} with the specified ID
     *
     * @param id              the {@link RegistryConfig#getId() id}  of {@link RegistryConfig}
     * @param consumerBuilder the {@link Consumer} of {@link RegistryBuilder}
     * @return current {@link DubboBootstrap} instance
     */
    public DubboBootstrap registry(String id, Consumer<RegistryBuilder> consumerBuilder) {
        RegistryBuilder builder = createRegistryBuilder(id);
        consumerBuilder.accept(builder);