pause time metric for pipelines can distinguish whether the pausing was user-requested

[juliev0]

Summary

For the total pause time metric for pipelines, it would be good if we can ultimately chart/alert on pipelines that have been paused by the system, as opposed to those that have been paused by the user.

The ones that have been paused by the user are the ones for which the Rollout's Pipeline spec indicate spec.desiredPhase=Paused.

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Message from the maintainers:

If you wish to see this enhancement implemented please add a 👍 reaction to this issue! We often sort issues this way to know what to prioritize.

[juliev0]

(note if you look for specBasedPause in pipelinerollout_controller.go, you'll see logic that's looking for this currently)

@xdevxy did you want to go into this Sprint or later in Q1?

[juliev0]

@afugazzotto have you started working on this yet? If not, do you mind if we reassign to @dpadhiar ?