Convert site to Hugo (#8316)

This commit converts content and layout to use Hugo.

content/en/docs/tutorials/stateless-application/deployment.yaml

@@ -0,0 +1,21 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  selector:
+    matchLabels:
+      app: nginx
+  replicas: 2 # tells deployment to run 2 pods matching the template
+  template: # create pods using pod definition in this template
+    metadata:
+      # unlike pod-nginx.yaml, the name is not included in the meta data as a unique name is
+      # generated from the deployment name
+      labels:
+        app: nginx
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.7.9
+        ports:
+        - containerPort: 80