fix: make example available

1. fix path error in pkg/nvmf/fabrics.go
2. add nvmf kernel target setup guide
3. update example and deploy yaml

Signed-off-by: Meinhard Zhou <zhouenhua@bytedance.com>

examples/kubernetes/example/nginx.yaml

@@ -23,5 +23,5 @@ spec:
               name: nvmf-volume
       volumes:
         - name: nvmf-volume
-          persistentVolume:
-            claimName: pvc-example
+          persistentVolumeClaim:
+            claimName: csi-nvmf-pvc

examples/kubernetes/example/pv.yaml

@@ -1,18 +1,19 @@
 apiVersion: v1
 kind: PersistentVolume
 metadata:
-	name: nvmfplugin-pv
+  name: csi-nvmf-pv
 spec:
-	storageClassName: csi.nvmf.com
-	accessModes:
-	- ReadWriteOnce
-	capacity:
-	  storage: 20Gi
-	csi:
-	  driver: NVMf
-	  volumeAttributes:
-	  	targetTrAddr: "192.168.122.18"
-	  	targetTrPort: "49153"
-	  	targetTrType: "tcp"
-	  	deviceUUID: "58668891-c3e4-45d0-b90e-824525c16080"
-	  	nqn: "nqn.2021-07.org.test-nvmf.example"
+  storageClassName: cs-nvmf-sc
+  accessModes:
+    - ReadWriteOnce
+  capacity:
+    storage: 20Gi
+  csi:
+    driver: csi.nvmf.com
+    volumeHandle: nvmf-data-id
+    volumeAttributes:
+      targetTrAddr: "192.168.122.18"
+      targetTrPort: "49153"
+      targetTrType: "tcp"
+      deviceUUID: "58668891-c3e4-45d0-b90e-824525c16080"
+      nqn: "nqn.2022-08.org.test-nvmf.example"

examples/kubernetes/example/pvc.yaml

@@ -1,11 +1,12 @@
 apiVersion: v1
 kind: PersistentVolumeClaim
 metadata:
-  name: pvc-example
+  name: csi-nvmf-pvc
 spec:
   accessModes:
     - ReadWriteOnce
-  storageClassName: csi-nvmf-test
+  storageClassName: csi-nvmf-sc
   resources:
     requests:
-      storage: 20Gi
+      storage: 20Gi
+      

examples/kubernetes/example/storageclass.yaml

@@ -1,7 +1,7 @@
 apiVersion: storage.k8s.io/v1
 kind: StorageClass
 metadata:
-  name: csi-nvmf-test
+  name: csi-nvmf-sc
 provisioner: csi.nvmf.com
 reclaimPolicy: Delete
 allowVolumeExpansion: true