## 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。


return registry(builder.build());
    }
    /**
     * Add an instance of {@link RegistryConfig}
     *
     * @param registryConfig an instance of {@link RegistryConfig}
     * @return current {@link DubboBootstrap} instance
     */
    public DubboBootstrap registry(RegistryConfig registryConfig) {
        configManager.addRegistry(registryConfig);
        return this;
    }
    /**
     * Add an instance of {@link RegistryConfig}
     *
     * @param registryConfigs the multiple instances of {@link RegistryConfig}
     * @return current {@link DubboBootstrap} instance
     */
    public DubboBootstrap registries(List<RegistryConfig> registryConfigs) {
        if (CollectionUtils.isEmpty(registryConfigs)) {
            return this;
        }
        registryConfigs.forEach(this::registry);
        return this;
    }
    
    public DubboBootstrap protocol(Consumer<ProtocolBuilder> consumerBuilder) {
        return protocol(DEFAULT_PROTOCOL_ID, consumerBuilder);
    }
    public DubboBootstrap protocol(String id, Consumer<ProtocolBuilder> consumerBuilder) {