## 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。


useRegistryAsConfigCenterIfNecessary();
        startMetadataReport();
        loadRemoteConfigs();
        checkGlobalConfigs();
        initMetadataService();
        initMetadataServiceExporter();
        initEventListener();
        if (logger.isInfoEnabled()) {
            logger.info(NAME + " has been initialized!");
        }
    }
    private void checkGlobalConfigs() {
        
        ConfigValidationUtils.validateApplicationConfig(getApplication());
        
        Collection<ConfigCenterConfig> configCenters = configManager.getConfigCenters();
        if (CollectionUtils.isNotEmpty(configCenters)) {
            for (ConfigCenterConfig configCenterConfig : configCenters) {
                ConfigValidationUtils.validateConfigCenterConfig(configCenterConfig);
            }
        }
        
        Collection<MetadataReportConfig> metadatas = configManager.getMetadataConfigs();
        for (MetadataReportConfig metadataReportConfig : metadatas) {
            ConfigValidationUtils.validateMetadataConfig(metadataReportConfig);
        }
        
        Collection<ProviderConfig> providers = configManager.getProviders();
        if (CollectionUtils.isEmpty(providers)) {
            configManager.getDefaultProvider().orElseGet(() -> {