Merge release 1.14 into 1.15. (#16439)

1. Confirm the document content is similar as en version.
2. Merge the zh release-1.14 version into 1.15 version
3. add the 1.14 all sample into 1.15 for template work. The build looks fine.

- docs
  - concepts
    - architecture

content/zh/examples/service/networking/curlpod.yaml

@@ -0,0 +1,28 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: curl-deployment
+spec:
+  selector:
+    matchLabels:
+      app: curlpod
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: curlpod
+    spec:
+      volumes:
+      - name: secret-volume
+        secret:
+          secretName: nginxsecret
+      containers:
+      - name: curlpod
+        command:
+        - sh
+        - -c
+        - while true; do sleep 1; done
+        image: radial/busyboxplus:curl
+        volumeMounts:
+        - mountPath: /etc/nginx/ssl
+          name: secret-volume