Consolidate YAML files [part-8] (#9347)

* Consolidate YAML files [part-8]

This PR exacts the YAML files referenced from the following subdirs:

- docs/concepts/workloads
- docs/concepts/configuration
- docs/concepts/policy

The following problems are fixed:

- docs/concepts/workloads/controllers/ doesnt have a 'cronjob.yaml for
  test
- the exactly same `pod.yaml` was used in both the task/config-pod-container
  topic and the concepts/configuration topics.

* Update examples_test.go

* Add missing yaml file.

content/en/docs/tasks/configure-pod-container/assign-pods-nodes.md

@@ -57,12 +57,12 @@ This pod configuration file describes a pod that has a node selector,
 `disktype: ssd`. This means that the pod will get scheduled on a node that has
 a `disktype=ssd` label.
 
-{{< code file="pod.yaml" >}}
+{{< codenew file="pods/pod-nginx.yaml" >}}
 
 1. Use the configuration file to create a pod that will get scheduled on your
    chosen node:
 
-        kubectl create -f https://k8s.io/docs/tasks/configure-pod-container/pod.yaml
+        kubectl create -f https://k8s.io/examples/pods/pod-nginx.yaml
 
 1. Verify that the pod is running on your chosen node:
 
@@ -80,4 +80,3 @@ Learn more about
 [labels and selectors](/docs/concepts/overview/working-with-objects/labels/).
 {{% /capture %}}
 
-

content/en/docs/tasks/configure-pod-container/pod.yaml

@@ -1,13 +0,0 @@
-apiVersion: v1
-kind: Pod
-metadata:
-  name: nginx
-  labels:
-    env: test
-spec:
-  containers:
-  - name: nginx
-    image: nginx
-    imagePullPolicy: IfNotPresent
-  nodeSelector:
-    disktype: ssd