Cluster Autoscaler maintenance

To maintain the clusterautoscaler package, you should follow these steps.

Build the new helm template with the following command:

helm repo add autoscaler https://kubernetes.github.io/autoscaler

helm template cluster-autoscaler autoscaler/cluster-autoscaler -n kube-system \
  --set cloudProvider=aws \
  --set 'autoDiscovery.clusterName'=changeme \
  --set fullnameOverride=cluster-autoscaler \
  --set awsRegion=eu-west-1 > built.yaml

Check the differences with base/deploy.yaml file and change accordingly.

What was changed:

Removed unnecessary helm tags from the manifests and replaced with app: cluster-autoscaler when applicable, to maintain compatibility with older cluster-autoscaler package versions.

cluster-autoscaler command changed to:

command:
  - ./cluster-autoscaler
  - --cloud-provider=aws
  - --namespace=kube-system
  - --logtostderr=true
  - --stderrthreshold=info
  - --v=4
  - --scale-up-from-zero
  - --skip-nodes-with-local-storage=false
  - --expander=least-waste
  - --node-group-auto-discovery=asg:tag=k8s.io/cluster-autoscaler/enabled,k8s.io/cluster-autoscaler/$(CLUSTER_NAME)

Added env var CLUSTER_NAME to the deployment, to simplify patching
Added requests and limits
Removed PodDisruptionBudget

Add the new EKS version folder like the existing v1.23.x, v1.24.x, v1.25.x, etc. if needed.