Add read-only rbac for csinodes to cluster-autoscaler

Author: losipiuk

cluster/addons/rbac/cluster-autoscaler/cluster-autoscaler-rbac.yaml

@@ -40,7 +40,7 @@ rules:
     resources: ["poddisruptionbudgets"]
     verbs: ["get", "list", "watch"]
   - apiGroups: ["storage.k8s.io"]
-    resources: ["storageclasses"]
+    resources: ["storageclasses", "csinodes"]
     verbs: ["get", "list", "watch"]
   # misc access
   - apiGroups: [""]