update service.json in persistent-volume example to v1beta3

persistent-volumes/simpletest/service.json

@@ -1,9 +1,19 @@
 {
-    "apiVersion": "v1beta1",
+  "kind": "Service",
-    "kind": "Service",
+  "apiVersion": "v1beta3",
-    "id": "frontendservice",
+  "metadata": {
-    "port": 3000,
+    "name": "frontendservice"
-    "containerPort": "http-server",
+  },
-    "selector": { "name": "frontendhttp" },
+  "spec": {
-    "createExternalLoadBalancer": false
+    "ports": [
+      {
+        "protocol": "TCP",
+        "port": 3000,
+        "targetPort": "http-server"
+      }
+    ],
+    "selector": {
+      "name": "frontendhttp"
+    }
+  }
 }