[feature request] Concurrent Rolling Upgrades between Node Pools

[chunhui1012]

What would you like to be added: A service deployed across multiple node pools， perform rolling upgrades based on node pools 。

rolling upgrades with nodepool selecter

Why is this needed: to increase parallelism and reduce upgrade time.

others /kind feature

[rambohe-ch]

@chunhui1012 If you use YurtAppSet to deploy applications across NodePools, you can use the tweaks feature in YurtAppSet to perform gray upgrade for applications.

the proposal of YurtAppSet is here: https://github.com/openyurtio/openyurt/blob/master/docs/proposals/20240102-upgrade-yurtappset-to-v1beta1.md

and the tutorial docs of YurtAppSet is under writing by @luc99hen

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