OZG-3961 clarify username for resourceNames

src/main/helm/templates/ozg_operator_secrets_read_role.yaml

@@ -9,7 +9,7 @@ rules:
       - "*"
     resourceNames:
     {{ range $user := .Values.sso.keycloak_users }}
-      - {{ $user.name }}-credentials    
+      - {{ regexReplaceAll "[^a-zA-Z0-9]" $user.name "" }}-credentials    
     {{ end }} 
     resources:
       - secrets

src/test/helm/ozg_operator_secrets_read_role_test.yaml

@@ -33,6 +33,8 @@ tests:
         keycloak_users:
           - name: peter
           - name: sabine
+          - name: _with_underscore_
+          - name: .with.dot.
     asserts:
       - contains:
           path: rules
@@ -42,6 +44,8 @@ tests:
             resourceNames:
                - peter-credentials
                - sabine-credentials
+               - withunderscore-credentials
+               - withdot-credentials
             resources:
                - secrets
             verbs: