Kubernetes native tasks

[fhennig]

requires Druid 25.

https://github.com/apache/druid/releases/tag/druid-25.0.0#25-highlights-kubernetes-native-tasks

kubernetes native tasks can be enabled with an extension. This eliminates the need for middle managers altogether! Very cool

docs: https://druid.apache.org/docs/latest/development/extensions-contrib/k8s-jobs/

docs say this is experimental