[KEDA] Capabilities check needed for Helm file keda/templates/25-metrics-poddisruptionbudget.yaml

[hoepfnerj]

The keda Helm chart cannot be deployed on Kubernetes 1.25 due to apiVersion: policy/v1beta1

Expected Behavior

The keda Helm chart is deployable on Kubernetes 1.25

Actual Behavior

The PodDisruptionBudget for metrics-apiserver cannot be deployed due to removed apiVersion: policy/v1beta1

Steps to Reproduce the Problem

1. set value "podDisruptionBudget.minAvailable: 1"
2. deploy on Kubernetes 1.25
3. Error: unable to build kubernetes objects from release manifest: resource mapping not found for name: "keda-operator-metrics-apiserver" namespace: "kube-keda" from "": no matches for kind "PodDisruptionBudget" in version "policy/v1beta1"
   │ ensure CRDs are installed first

A solution would be to check cluster capabilities in file keda/templates/25-metrics-poddisruptionbudget.yaml the same way as in keda/templates/13-keda-poddisruptionbudget.yaml

Specifications

• KEDA Version: 2.8.1
• Platform & Version: Please elaborate
• Kubernetes Version: 1.25
• Scaler(s): Please elaborate

[tomkerkhove]

Are you willing to send a PR?