Kubernetes 环境部署还需要额外部署 metadata server 和 config server 吗？

- [ x ] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate.

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使用 xds 部署在 kubernetes 后，会报 metadata 和 config server 相关的错误：
```plain
2023-03-31T18:57:01.979+08:00 WARN 1 --- [eduler-thread-5] o.a.d.r.c.m.MetadataServiceNameMapping : [DUBBO] No valid metadata config center found for mapping report., dubbo version: 3.2.0-beta.5, current host: 10.244.2.65, error code: 0-2. This may be caused by , go to https://dubbo.apache.org/faq/0/2 to find instructions.
2023-03-31T18:57:01.979+08:00 ERROR 1 --- [eduler-thread-5] org.apache.dubbo.config.ServiceConfig : [DUBBO] Failed register interface application mapping for service organization-producer/org.apache.dubbo.metadata.MetadataService:1.0.0, dubbo version: 3.2.0-beta.5, current host: 10.244.2.65, error code: 5-10. This may be caused by configuration server disconnected, go to https://dubbo.apache.org/faq/5/10 to find instructions.
```

这是否意味着 dubbo3 部署在 kubernetes 后，并没有利用 kubernetes 的能力作为 metadata server 和 configserver，还是需要我们额外部署这两个组件？

Start with the XDS-on-Kubernetes deployment documentation and the two FAQ links included in the reported errors. Trace how metadata and config centers are configured in this deployment, then document whether Kubernetes supplies either service or whether separate components are required, using the reported logs as the acceptance context.

Written by the indexing model from the issue text.