Certificate max duration 100 days

apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  name: cert-manager-limit-duration
  annotations:
    policies.kyverno.io/title: Certificate max duration 100 days
    policies.kyverno.io/category: Cert-Manager
    policies.kyverno.io/severity: medium
    policies.kyverno.io/minversion: 1.6.0
    policies.kyverno.io/subject: Certificate
    policies.kyverno.io/description: Kubernetes managed non-letsencrypt certificates have to be renewed in every 100 days.
spec:
  validationFailureAction: Audit
  background: false
  rules:
    - name: certificate-duration-max-100days
      match:
        any:
          - resources:
              kinds:
                - Certificate
      preconditions:
        all:
          - key: "{{ contains(request.object.spec.issuerRef.name, 'letsencrypt') }}"
            operator: Equals
            value: false
          - key: "{{ request.object.spec.duration }}"
            operator: NotEquals
            value: ""
      validate:
        message: certificate duration must be < than 2400h (100 days)
        deny:
          conditions:
            all:
              - key: "{{ max( [ to_number(regex_replace_all('h.*',request.object.spec.duration,'')), to_number('2400') ] ) }}"
                operator: NotEquals
                value: 2400