compatibility: v0.8.0 --> v0.9

[wey-gu]

There are some pain points that could be addressed if possible:

• [ ] manually CRD update is required, this could be a pitfall even in case of fresh deployment of v0.9.0 operator
• [ ] upgrade path from v0.8.0(v2.5.x) to v0.9(v2.5.x) seems to be not possible due to the CRD change, it will force the end-user to run production v0.8.0 to a redeployment

Thanks :) PS. great job on the v0.9.0 on rolling upgrade support!

• https://discuss.nebula-graph.com.cn/t/topic/6656
• https://discuss.nebula-graph.com.cn/t/topic/6702
• https://discuss.nebula-graph.com.cn/t/topic/6573

[MegaByte875]

I will support it recently, please keep a watchful eye on it.

[wey-gu]

I will support it recently, please keep a watchful eye on it.

Thanks so much Kevin~~