add updateTimestamp in ConfigMap status

[j4ckstraw]

What would you like to be added?

add a new field updateTimestamp in ConfigMap status

Why is this needed?

We can use this field to check whether the ConfigMap has been updated or not, and when it was updated.

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[googs1025]

IIUC, k8s was originally designed without the concept of updatedTime. The controller does not care about the number of updates, but only cares whether the actual state meets the expected state. 🤔 Maybe you can use last-applied-configuration or resourceVersion to solve this problem.