update readme

### The Route

Since we are using ClusterIP, in the service type above, and our MinIO application is accessible via HTTP/HTTPS, we expose the application via a route. If our service used another protocol, besides HTTP/HTTPS, we would use a NodePort service type.

Here is our [route.yaml](https://code.ornl.gov/ryu/slate_helm_examples/-/blob/prout-dev/charts/minio-standalone/templates/route.yaml) file:

```

apiVersion: route.openshift.io/v1

kind: Route

metadata:

  name: minio-standalone

spec:

  host: minio-standalone.apps.marble.ccs.ornl.gov

  to:

    # Associate with the service we created

    kind: Service

    name: minio-standalone-service

  port:

    # Needs to match name of port in the service file

    targetPort: 9000-tcp

  tls:

    # Terminate TLS at the router, before sending to service. Preferred method of securing a route.

    termination: edge

 ```

Simple diagram of networking relationship and the deployment wrapping the pod(s):

```

                                                                                     Deployment

                                                                                     ----------

https://minio-standalone.apps.marble.ccs.ornl.gov/minio/ ---> Route --> Service --> |  Pod(s)  |

                                                                                     ---------- 

```

At the end, once we install our minio-standalone application, we will have the above and be able to access the app via the URL.

### The Network Policy

Network Policies are specifications of how groups of pods are allowed to communicate with each other and other network endpoints. A pod is selected in Network Policy based on a label, defining rules for network traffic, specific to that pod.

In this example, we create a Network Policy for our minio-standalone applicaiton. Here is the [network-policy.yaml](https://code.ornl.gov/ryu/slate_helm_examples/-/blob/prout-dev/charts/minio-standalone/templates/network-policy.yaml) file:

```

kind: NetworkPolicy

apiVersion: networking.k8s.io/v1

metadata:

  name: web-allow-external

  namespace: stf007

spec:

  podSelector:

    matchLabels:

      # how we match our application

      app: minio-standalone

  ingress:

    # allow all

    - {}

  policyTypes:

    - Ingress

```

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