Resolve "Mattermost Operator - Add Dynamic Network Policy support"

General MR

Summary

This MR enables Dynamic Network Policy support in Mattermost-Operator

Relevant logs/screenshots

chuka@DESKTOP-006TSPC:~/bigbang/bigbang$ kubectl describe networkpolicy allow-istiod-egress -n mattermost-operator
Name:         allow-istiod-egress
Namespace:    mattermost-operator
Created on:   2025-03-28 15:48:19 -0500 CDT
Labels:       app.kubernetes.io/managed-by=Helm
              helm.toolkit.fluxcd.io/name=mattermost-operator
              helm.toolkit.fluxcd.io/namespace=bigbang
Annotations:  meta.helm.sh/release-name: mattermost-operator-mattermost-operator
              meta.helm.sh/release-namespace: mattermost-operator
Spec:
  PodSelector:     <none> (Allowing the specific traffic to all pods in this namespace)
  Not affecting ingress traffic
  Allowing egress traffic:
    To Port: 15012/TCP
    To:
      NamespaceSelector: app.kubernetes.io/name=istio-controlplane
      PodSelector: app=istiod
  Policy Types: Egress

Linked Issue

issue

Upgrade Notices

N/A