fix for nfs-photo not exporting root dir

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

@@ -2,3 +2,4 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
   - longhorn-no-retain.yaml
+  - longhorn-single-replica.yaml

clusters/base/infra/longhorn/storage-classes/longhorn-single-replica.yaml

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