Update existing deployment?

[jlewi]

Should fairing support a mode where we can update an existing deployment rather than creating a new one?

I think the use case would be for a skaffold like development workflow where you are constantly redeploying with your latest changes. In this case it would be convenient to have some sugar to replace the existing deployment.

/cc @r2d4

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[r2d4]

Skaffold does this by streaming logs based on container image, which we can do (we currently stream based on a label selector).

[jtfogarty]

/area engprod /priority p2