Don't depend on k8s.io/kubernetes

What does this MR do?

• removes the dependency on k8s.io/kubernetes and therefor fixes the issues with go list -m all
• adds a test to ensure our deps can be resolved successfully

Why was this MR needed?

• removes dependencies
• fixes issues with dependency resolution, ie go list -m all

What's the best way to test this MR?

• see the pipeline go green

What are the relevant issue numbers?

N/A