add nfs-provisioner with sensible path template

infrastructure/nfs-provisioner/kustomization.yaml

@@ -0,0 +1,12 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+namespace: nfs-provisioner
+
+resources:
+  - github.com/kubernetes-sigs/nfs-subdir-external-provisioner//deploy
+  - namespace.yaml
+
+patches:
+  - path: nfs_values.yaml
+  - path: storageclass_values.yaml