## 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。


destroyServiceDiscoveries();
            clear();
            shutdown();
            release();
        }
    }
    private void destroyProtocols() {
        configManager.getProtocols().forEach(protocolConfig -> {
            ExtensionLoader.getExtensionLoader(Protocol.class).getExtension(protocolConfig.getName()).destroy();
        });
        if (logger.isDebugEnabled()) {
            logger.debug(NAME + "'s all ProtocolConfigs have been destroyed.");
        }
    }
    private void destroyRegistries() {
        AbstractRegistryFactory.destroyAll();
    }
    private void destroyServiceDiscoveries() {
        getServiceDiscoveries().forEach(serviceDiscovery -> {
            execute(() -> {
                serviceDiscovery.destroy();
            });
        });
        if (logger.isDebugEnabled()) {
            logger.debug(NAME + "'s all ServiceDiscoveries have been destroyed.");
        }
    }
    private void clear() {
        clearConfigs();
        clearApplicationModel();