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/share-process-namespace.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: nginx
+spec:
+  shareProcessNamespace: true
+  containers:
+  - name: nginx
+    image: nginx
+  - name: shell
+    image: busybox
+    securityContext:
+      capabilities:
+        add:
+        - SYS_PTRACE
+    stdin: true
+    tty: true