Automatically bump version in resource labels during release

[halamix2]

Description

Automatically bump version stored in chart during release process
The mechanism could be similar to the one used in serverless - version is set to main on main branch, and replaced by Github Action with correct version on release.

Currently version would need to be updated in these places:

• docker-registry - mix of config/operator/base/kustomization.yaml and chart
• serverless - mix of kustomize and chart
• keda-manager - config/default/kustomization.yaml (blocked by Set app.kubernetes.io/* labels for keda resources to indicate they are managed by keda manager #457)
• warden - charts/warden/Chart.yaml

Reasons

After labels update it became necessary to store version in the k8s resources labels.
Currently this version needs to be manually bumped, which can lead to desynchronization and errors

Attachments

• Consistent labeling serverless#1014

[kwiatekus]

I have installed 0.2.0 version of docker registry module on k3d. It ws released last week.
When I lookup for the app.kubernetes.io/version label I get nothing back
k get pods -n kyma-system -oyaml | grep app.kubernetes.io/version

[kwiatekus]

IMO this still doesnt work.
Check the latest 1.4.0 keda release. Download the keda-manager.yaml and check the resource version labels