Mattermost Operator - Add Dynamic Network Policy support

Description:

Currently many Ingress and Egress package network policies have hardcoded namespaceSelector labels. These hardcoded labels do not support the migration to Istio Operator-less deployments. This issue will track adding support for namespaceSelector labels that are dynamically passed from the Big Bang umbrella chart.

Implementation Guide Tasks:

• Setup Network Policies for Dynamic Values
• Validate Changes in a K3d Cluster with BB deployed and Istio Operator enabled
• Validate Changes in a K3d Cluster with BB deployed and Istio Operator-less (istioCore) enabled
• Add Required Templating in Big Bang Merge request

added kindenhancement priority4 statusgrooming labels

added to epic big-bang&393

marked this issue as related to big-bang/bigbang#2542

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changed the description

changed iteration to Big Bang Iterations Mar 18, 2025 - Mar 31, 2025

set weight to 2

assigned to @chukwuka.c.akagbusi

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