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/sched/pod3.yaml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: annotation-second-scheduler
+  labels:
+    name: multischeduler-example
+spec:
+  schedulerName: my-scheduler
+  containers:
+  - name: pod-with-second-annotation-container
+    image: k8s.gcr.io/pause:2.0