switch to new longhorn-retain storageclass

clusters/base/infra/storage-classes/kustomization.yaml

@@ -0,0 +1,4 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - longhorn-retain.yaml

clusters/base/infra/storage-classes/longhorn-retain.yaml

@@ -0,0 +1,12 @@
+apiVersion: storage.k8s.io/v1
+kind: StorageClass
+metadata:
+  name: longhorn-retain
+  annotations:
+    storageclass.kubernetes.io/is-default-class: "true"
+provisioner: driver.longhorn.io
+reclaimPolicy: Retain
+allowVolumeExpansion: true
+parameters:
+  numberOfReplicas: "3"
+  staleReplicaTimeout: "30"