Reusable tasks in prefect 2 are divided in prefect collections which you can find under
integrations on the prefect 2 docs. Although there is no Kubernetes collection listed, I happen to know there was actually created a
repository for this. However, this repository does not contain any code at the moment (which probably is the reason it's not listed). There is an
open pull request for the jobs tasks from the 1.0 though, so it seems you'll have to wait for that to be accepted. Or contribute yourself if you would need some other functionality š