Ingress-nginx path allows retrieval of ingress-nginx serviceaccount token

Summary: A user with the permissions to create an ingress resource can obtain the ingress-nginx service account token which can list secrets is all namespaces (cluster wide).

apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: ingress-creator
  namespace: default
rules:
- apiGroups: ["networking.k8s.io"]
  resources: ["ingresses"]
  verbs: ["get", "create", "update"]