"Promote Full" option for Numaplane

[juliev0]

Summary

Argo Rollouts has an option called "Promote full" which means to bypass the standard analysis check and simply promote the new one. Perhaps we could have this option for a Rollout that's either Failed Progressive or has not yet been assessed (i.e. in either case still in "Pending" phase).

We could use a Label on the Rollout called "numaplane.numaproj.io/promote". Either we set it to "true", or it's perhaps a Label with no value, and if the Label exists it means to promote.

If we make it so that that label can be used for all progressive rollouts, then we can just use it in the progressive.go code directly without worrying about which Rollout it is.

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[juliev0]

This is the logic we do when we declare success. Perhaps that logic could be moved into a function which we can also call if the Label is set near the top of processUpgradingChild().

[juliev0]

Let's have a new Status field, in the UpgradingChildStatus called ForcedSuccess (bool). You can set that to true, and you actually don't need to worry about clearing it, because it will automatically get reset the next time there's an upgrading child.