Draft: Resolve "egress-sso network policy needs to open port 8443, not 443"

General MR

Summary

Creating a new chart value and make the port: option in our NetworkPolicy configurable with a default of 443

Relevant logs/screenshots

{{- if and .Values.networkPolicies.enabled .Values.global.appConfig.omniauth.enabled }}
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: egress-sso
  namespace: {{ .Release.Namespace }}
spec:
  podSelector: 
    matchLabels:
      app: webservice
  policyTypes:
  - Egress
  egress:
    - ports:
      - port: 8443
        protocol: TCP
{{- end }}

in this file: https://repo1.dso.mil/big-bang/product/packages/gitlab/-/blob/main/chart/templates/bigbang/networkpolicies/egress-sso.yaml

Linked Issue

egress-sso network policy needs to open port 8443, not 443

Upgrade Notices

(Include any relevant notes about upgrades here or write "N/A" if there are none)

Closes #241