Usage Metering Service Ingress Network Policy (#2566)

* Add clarification about ingress vs egress network policies

https://github.ibm.com/IBMPrivateCloud/roadmap/issues/66645

* Usage Metering Service Network Policy

Signed-off-by: Piotr Godowski <piotr.godowski@ibm.com>

* Moved NetworkPolicy file location into the proper subfolder

---------

Signed-off-by: Piotr Godowski <piotr.godowski@ibm.com>
Co-authored-by: Piotr Godowski <Piotr.Godowski@pl.ibm.com>
Co-authored-by: Daniel Fan <fanyuchensx@gmail.com>

Author: 3 people

cp3-networkpolicy/ingress/services/access-to-usage-metering-service.yaml

@@ -0,0 +1,19 @@
+kind: NetworkPolicy
+apiVersion: networking.k8s.io/v1
+metadata: 
+  name: access-to-ibm-usage-metering-instance
+  namespace: "csNamespace"
+  labels:
+    component: cpfs3
+spec: 
+  podSelector: 
+    matchLabels: 
+      app.kubernetes.io/component: ibm-usage-metering-instance
+  ingress: 
+    - ports: 
+        - protocol: TCP
+          port: 8080
+        - protocol: TCP
+          port: 8081
+  policyTypes: 
+    - Ingress