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/admin/dns/busybox.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: busybox
+  namespace: default
+spec:
+  containers:
+  - name: busybox
+    image: busybox:1.28
+    command:
+      - sleep
+      - "3600"
+    imagePullPolicy: IfNotPresent
+  restartPolicy: Always

content/zh/examples/admin/dns/dns-horizontal-autoscaler.yaml

@@ -0,0 +1,33 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: dns-autoscaler
+  namespace: kube-system
+  labels:
+    k8s-app: dns-autoscaler
+spec:
+  selector:
+    matchLabels:
+       k8s-app: dns-autoscaler
+  template:
+    metadata:
+      labels:
+        k8s-app: dns-autoscaler
+    spec:
+      containers:
+      - name: autoscaler
+        image: k8s.gcr.io/cluster-proportional-autoscaler-amd64:1.1.1
+        resources:
+            requests:
+                cpu: "20m"
+                memory: "10Mi"
+        command:
+          - /cluster-proportional-autoscaler
+          - --namespace=kube-system
+          - --configmap=dns-autoscaler
+          - --target=<SCALE_TARGET>
+          # When cluster is using large nodes(with more cores), "coresPerReplica" should dominate.
+          # If using small nodes, "nodesPerReplica" should dominate.
+          - --default-params={"linear":{"coresPerReplica":256,"nodesPerReplica":16,"min":1}}
+          - --logtostderr=true
+          - --v=2