Refactor earlier mutator implementations to use wildcard methodology - Istio

Package Merge Request

Package Changes

Omits the serviceAccounts list in Istio automountServiceAccountToken hardening, allowing the mutator to target all SAs via wildcard. This is more robust and better accommodates upstream changes over time.

At the moment, however, this is a simple refactor and there is no change to the original hardening.

Package MR

(Link to Package MR here)

For Issue

Closes https://repo1.dso.mil/big-bang/bigbang/-/issues/1899

Upgrade Notices

N/A

chart/templates/kyverno-policies/values.yaml

@@ -697,11 +697,6 @@ policies:
     enabled: true
     namespaces:
       - namespace: istio-system
-        serviceAccounts:
-        - istiod
-        - istio-reader-service-account
-        - public-ingressgateway-service-account
-        - passthrough-ingressgateway-service-account 
         pods:
         - istiod-*
         - passthrough-ingressgateway-*