[Feat]: Kubernetes example and CI test for scale-out cluster

[vrajashkr]

Is your feature request related to a problem? Please describe.

Scale-out cluster is a feature being worked on in #2385
An awesome use-case of this functionality is in a Kubernetes environment where the stateless instances can horizontally scale.

Describe the solution you'd like

It would be awesome to have:

1. An example config for the scale-out cluster that could be used with Kubernetes.
2. CI tests that make use of KinD to test out the config.

Describe alternatives you've considered

N/A

Additional context

No response