Convert site to Hugo (#8316)

This commit converts content and layout to use Hugo.

content/cn/docs/tasks/inject-data-application/podpreset-replicaset-merged.yaml

@@ -0,0 +1,30 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  labels:
+    app: guestbook
+    tier: frontend
+  annotations:
+    podpreset.admission.kubernetes.io/podpreset-allow-database: "resource version"
+spec:
+  containers:
+  - name: php-redis
+    image: gcr.io/google_samples/gb-frontend:v3
+    resources:
+      requests:
+        cpu: 100m
+        memory: 100Mi
+    volumeMounts:
+    - mountPath: /cache
+      name: cache-volume
+    env:
+    - name: GET_HOSTS_FROM
+      value: dns
+    - name: DB_PORT
+      value: "6379"
+    ports:
+    - containerPort: 80
+  volumes:
+  - name: cache-volume
+    emptyDir: {}
+