Update integration tests to use latest kubernetes version
What does this MR do?
- Update the Kubernetes release version in kind to current latest (from 1.21 to 1.27)
- Parameterize various tool/ image versions (kubectl, helm-unittest, alpine image)
Why was this MR needed?
This MR updates integration test to use latest Kubernetes version (1.27), getting rid of outdated Kubernetes release (1.21).
What's the best way to test this MR?
MR has associated passing pipeline.
What are the relevant issue numbers?
none.