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/pods/storage/pv-pod.yaml

@@ -0,0 +1,20 @@
+kind: Pod
+apiVersion: v1
+metadata:
+  name: task-pv-pod
+spec:
+  volumes:
+    - name: task-pv-storage
+      persistentVolumeClaim:
+       claimName: task-pv-claim
+  containers:
+    - name: task-pv-container
+      image: nginx
+      ports:
+        - containerPort: 80
+          name: "http-server"
+      volumeMounts:
+        - mountPath: "/usr/share/nginx/html"
+          name: task-pv-storage
+
+