[Feature] support deploy CurveBS on bcache+mdrai1

[zyb521]

请帮助在 bcache+mdrai1 上面部署 CurveBS，如果你想了解更详细的信息或有任何疑问，请在该 issue 下面告诉我。 可能包括：

• bcache缓存盘以及wal日志分区，基于mdraid1部署
• mdraid1的参数配置
• bcahe集群清理时，清理mdraid1资源

基于curveadm playbook功能实现，我们可以提供部署步骤和部署命令的参考脚本

[shuaihehe]

apply

[hdbdn77]

Hello, I am a graduate student majoring in computer technology at Hangzhou University of Electronic Science and Technology. My commonly used development language is go. I have participated in the Douyin back-end development project of the Byte Youth Training Camp. I am familiar with the gin framework and related technologies for microservice development. I am also familiar with the stack (grpc, docker, k8s, mysql, redis, etcd). I hope to participate in a project on this theme and learn about distributed storage.

[hdbdn77]

部署步骤和部署命令的参考脚本能提供一下吗，我在curveadm的develop分支没有看到 playbook功能