add example

controllers/nginx/examples/echo-header.yaml

@@ -0,0 +1,46 @@
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: echoheaders
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: echoheaders
+    spec:
+      containers:
+      - name: echoheaders
+        image: gcr.io/google_containers/echoserver:1.8
+        ports:
+        - containerPort: 8080
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: echoheaders-x
+  labels:
+    app: echoheaders-x
+spec:
+  ports:
+  - port: 80
+    targetPort: 8080
+    protocol: TCP
+    name: http
+  selector:
+    app: echoheaders
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: echoheaders-y
+  labels:
+    app: echoheaders-y
+spec:
+  ports:
+  - port: 80
+    targetPort: 8080
+    protocol: TCP
+    name: http
+  selector:
+    app: echoheaders