docs: refactor sections, consolidate examples (#1164)

docs/configuration/examples/kubernetes/httpbin.yml

@@ -1,37 +0,0 @@
-apiVersion: v1
-kind: Service
-metadata:
-  name: httpbin
-  labels:
-    app: httpbin
-spec:
-  type: NodePort
-  ports:
-    - name: http
-      port: 8000
-      targetPort: 80
-  selector:
-    app: httpbin
----
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: httpbin
-spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      app: httpbin
-      version: v1
-  template:
-    metadata:
-      labels:
-        app: httpbin
-        version: v1
-    spec:
-      containers:
-        - image: docker.io/kennethreitz/httpbin
-          imagePullPolicy: IfNotPresent
-          name: httpbin
-          ports:
-            - containerPort: 80