Show pod information in http-svc example

docs/examples/http-svc.yaml

@@ -14,6 +14,23 @@ spec:
         image: gcr.io/google_containers/echoserver:1.8
         ports:
         - containerPort: 8080
+        env:
+          - name: NODE_NAME
+            valueFrom:
+              fieldRef:
+                fieldPath: spec.nodeName
+          - name: POD_NAME
+            valueFrom:
+              fieldRef:
+                fieldPath: metadata.name
+          - name: POD_NAMESPACE
+            valueFrom:
+              fieldRef:
+                fieldPath: metadata.namespace
+          - name: POD_IP
+            valueFrom:
+              fieldRef:
+                fieldPath: status.podIP
 
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