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/hostaliases-pod.yaml

@@ -0,0 +1,22 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: hostaliases-pod
+spec:
+  restartPolicy: Never
+  hostAliases:
+  - ip: "127.0.0.1"
+    hostnames:
+    - "foo.local"
+    - "bar.local"
+  - ip: "10.1.2.3"
+    hostnames:
+    - "foo.remote"
+    - "bar.remote"
+  containers:
+  - name: cat-hosts
+    image: busybox
+    command:
+    - cat
+    args:
+    - "/etc/hosts"