Clean zh/docs directory for dangling YAML files (#17341)

There are many YAML manifests sneaking into the `zh/docs/` directory.
These files should go to the `zh/examples` directory instead. Having
these "garbage" files (not referenced anywhere) is creating confusion
for the release meister when merging branches. For example, some YAML
files found in the 'master' branch are no longer there in the
release-1.16 branch. It is tedious, if possible at all, to solve all
this kind of conflicts during a rebase.

The PR cleanses the zh/docs directory for all dangling YAML files.

content/zh/docs/concepts/policy/pod-security-policy.md

@@ -8,7 +8,6 @@ redirect_from:
 ---
 
 
-
 `PodSecurityPolicy` 类型的对象能够控制，是否可以向 Pod 发送请求，该 Pod 能够影响被应用到 Pod 和容器的 `SecurityContext`。
 查看 [Pod 安全策略建议](https://git.k8s.io/community/contributors/design-proposals/security-context-constraints.md) 获取更多信息。
 
@@ -143,23 +142,33 @@ _Pod 安全策略_ 由设置和策略组成，它们能够控制 Pod 访问的
 Pod 必须基于 PSP 验证每个字段。
 
 
+<!--
+### Create a policy and a pod
 
-## 创建 Pod 安全策略
+Define the example PodSecurityPolicy object in a file. This is a policy that
+simply prevents the creation of privileged pods.
 
-下面是一个 Pod 安全策略的例子，所有字段的设置都被允许：
+{{< codenew file="policy/example-psp.yaml" >}}
 
-{{< code file="psp.yaml" >}}
-
-
-
-下载示例文件可以创建该策略，然后执行如下命令：
+And create it with kubectl:
 
 ```shell
-$ kubectl create -f ./psp.yaml
-podsecuritypolicy "permissive" created
+kubectl-admin create -f example-psp.yaml
 ```
+-->
 
+### 创建一个策略和一个 Pod
 
+在一个文件中定义 PodSecurityPolicy 对象实例。这里的策略只是用来禁止创建有特权
+要求的 Pods。
+
+{{< codenew file="policy/example-psp.yaml" >}}
+
+使用 kubectl 执行创建操作：
+
+```shell
+kubectl-admin create -f example-psp.yaml
+```
 
 ## 获取 Pod 安全策略列表
 

content/zh/docs/concepts/policy/psp.yaml

@@ -1,18 +0,0 @@
-apiVersion: extensions/v1beta1
-kind: PodSecurityPolicy
-metadata:
-  name: permissive
-spec:
-  seLinux:
-    rule: RunAsAny
-  supplementalGroups:
-    rule: RunAsAny
-  runAsUser:
-    rule: RunAsAny
-  fsGroup:
-    rule: RunAsAny
-  hostPorts:
-  - min: 8000
-    max: 8080
-  volumes:
-  - '*'