autoscaler: Update to CA 1.26

Cluster Autoscaler version is supposed to match the Kubernetes version.
Also, updating specifically to address ASG tags for node resources
([issue 5164]).

[issue 5164]: https://github.com/kubernetes/autoscaler/issues/5164

autoscaler/kustomization.yaml

@@ -0,0 +1,54 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+- https://github.com/kubernetes/autoscaler/raw/cluster-autoscaler-release-1.26/cluster-autoscaler/cloudprovider/aws/examples/cluster-autoscaler-autodiscover.yaml
+
+images:
+- name: k8s.gcr.io/autoscaling/cluster-autoscaler
+  newName: registry.k8s.io/autoscaling/cluster-autoscaler
+  newTag: v1.26.6
+
+patches:
+- patch: |-
+    apiVersion: apps/v1
+    kind: Deployment
+    metadata:
+      name: cluster-autoscaler
+      namespace: kube-system
+    spec:
+      template:
+        spec:
+          containers:
+          - name: cluster-autoscaler
+            command:
+            - ./cluster-autoscaler
+            - --v=4
+            - --stderrthreshold=info
+            - --cloud-provider=aws
+            - --skip-nodes-with-local-storage=false
+            - --expander=least-waste
+            - --node-group-auto-discovery=asg:tag=k8s.io/cluster-autoscaler/enabled,k8s.io/cluster-autoscaler/kubernetes
+            env:
+            - name: AWS_ACCESS_KEY_ID
+              valueFrom:
+                secretKeyRef:
+                  key: access_key_id
+                  name: autoscaler-aws-keys
+            - name: AWS_SECRET_ACCESS_KEY
+              valueFrom:
+                secretKeyRef:
+                  key: secret_access_key
+                  name: autoscaler-aws-keys
+            - name: AWS_REGION
+              value: us-east-2
+            volumeMounts:
+          nodeSelector:
+            node-role.kubernetes.io/control-plane: ''
+          tolerations:
+          - effect: NoSchedule
+            key: node-role.kubernetes.io/control-plane
+            operator: Exists
+          - effect: NoSchedule
+            key: node-role.kubernetes.io/master
+            operator: Exists