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/tasks/run-application/run-single-instance-stateful-application.md

@@ -14,7 +14,7 @@ content_template: templates/tutorial
 
 * 在环境中通过磁盘创建一个PersistentVolume.
 * 创建一个MySQL Deployment.
-* 在集群内以一个已知的DNS名将MySQL暴露给其他pods.
+* 在集群内以一个已知的 DNS 名将 MySQL 暴露给其他 pods.
 
 {{% /capture %}}
 
@@ -23,38 +23,12 @@ content_template: templates/tutorial
 
 * {{< include "task-tutorial-prereqs.md" >}} {{< version-check >}}
 
-* 为了数据持久性我们将在环境上通过磁盘创建一个持久卷. 环境支持的类型见这里[here](/docs/user-guide/persistent-volumes/#types-of-persistent-volumes). 本篇文档将介绍 `GCEPersistentDisk` . `GCEPersistentDisk`卷只能工作在Google Compute Engine平台上.
+* {{< include "default-storage-class-prereqs.md" >}}
 
 {{% /capture %}}
 
-
 {{% capture lessoncontent %}}
 
-## 在环境中设置一个磁盘
-
-你可以为有状态的应用使用任何类型的持久卷. 有关支持环境的磁盘列表，请参考持久卷类型[Types of Persistent Volumes](/docs/user-guide/persistent-volumes/#types-of-persistent-volumes). 对于Google Compute Engine, 请运行:
-
-```
-gcloud compute disks create --size=20GB mysql-disk
-```
-
-
-接下来创建一个指向刚创建的 `mysql-disk`磁盘的PersistentVolume. 下面是一个PersistentVolume的配置文件，它指向上面创建的Compute Engine磁盘:
-
-{{< code file="gce-volume.yaml" >}}
-
-注意`pdName: mysql-disk` 这行与Compute Engine环境中的磁盘名称相匹配. 有关为其
-他环境编写PersistentVolume配置文件的详细信息，请参见持久卷[Persistent Volumes](/docs/concepts/storage/persistent-volumes/).
-
-
-创建持久卷:
-
-```
-kubectl create -f https://k8s.io/docs/tasks/run-application/gce-volume.yaml
-```
-
-
-
 ## 部署MySQL
 
 通过创建Kubernetes Deployment并使用PersistentVolumeClaim将其连接到现已存在的PersistentVolume上来运行一个有状态的应用.  例如, 下面这个YAML文件描述了一个运行MySQL
@@ -65,13 +39,16 @@ kubectl create -f https://k8s.io/docs/tasks/run-application/gce-volume.yaml
 注意: 在配置的yaml文件中定义密码的做法是不安全的. 具体安全解决方案请参考
 [Kubernetes Secrets](/docs/concepts/configuration/secret/).
 
-{{< code file="mysql-deployment.yaml" >}}
+{{< codenew file="application/mysql/mysql-deployment.yaml" >}}
+{{< codenew file="application/mysql/mysql-pv.yaml" >}}
 
+1. 部署 YAML 文件中定义的 PV 和 PVC：
 
-1. 部署YAML文件中定义的内容:
+        kubectl apply -f https://k8s.io/examples/application/mysql/mysql-pv.yaml
 
-       kubectl create -f https://k8s.io/docs/tasks/run-application/mysql-deployment.yaml
+1. 部署 YAML 文件中定义的 Deployment：
 
+        kubectl apply -f https://k8s.io/examples/application/mysql/mysql-deployment.yaml
 
 1. 展示Deployment相关信息: