Update Kubernetes example yaml files (#5278)

Removed the non production ready Kubernetes constructs that are not needed
for standard Minio deployment. General cleanup of the documents.

docs/orchestration/kubernetes-yaml/minio-standalone-deployment.yaml

@@ -2,25 +2,33 @@ apiVersion: extensions/v1beta1
 kind: Deployment
 metadata:
   # This name uniquely identifies the Deployment
-  name: minio-deployment
+  name: minio
 spec:
   strategy:
+    # Specifies the strategy used to replace old Pods by new ones
+    # Refer: https://kubernetes.io/docs/concepts/workloads/controllers/deployment/#strategy
     type: Recreate
   template:
     metadata:
       labels:
-        # Label is used as selector in the service.
+        # This label is used as a selector in Service definition
         app: minio
     spec:
-      # Refer to the PVC created earlier
+      # Volumes used by this deployment
       volumes:
       - name: data
+        # This volume is based on PVC
         persistentVolumeClaim:
           # Name of the PVC created earlier
           claimName: minio-pv-claim
       containers:
       - name: minio
-        # Pulls the default Minio image from Docker Hub
+        # Volume mounts for this container
+        volumeMounts:
+        # Volume 'data' is mounted to path '/data'
+        - name: data 
+          mountPath: "/data"
+        # Pulls the lastest Minio image from Docker Hub
         image: minio/minio:RELEASE.2017-11-22T19-55-46Z
         args:
         - server
@@ -34,7 +42,3 @@ spec:
         ports:
         - containerPort: 9000
           hostPort: 9000
-        # Mount the volume into the pod
-        volumeMounts:
-        - name: data # must match the volume name, above
-          mountPath: "/data"