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/qos/qos-pod-3.yaml

@@ -0,0 +1,9 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: qos-demo-3
+  namespace: qos-example
+spec:
+  containers:
+  - name: qos-demo-3-ctr
+    image: nginx