tiproxy: add spec field gracefulShutdownDeleteDelaySeconds to gracefully mark unhealthy before deleting the pods#6829

YangKeao wants to merge 4 commits intopingcap:mainpingcap/tidb-operator:mainfrom

YangKeao:feature/annotation-to-extend-graceful-shutdownYangKeao/tidb-operator:feature/annotation-to-extend-graceful-shutdownCopy head branch name to clipboard