docs: def will_expire(certificate, days):
      '''
      Returns a dict containing details of a certificate and whether
      the certificate will expire in the specified number of days.
      Input can be a PEM string or file path.
  
      .. versionadded:: 2016.11.0
  
      certificate:
          The certificate to be read. Can be a path to a certificate file,
          or a string containing the PEM formatted text of the certificate.
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' x509.will_expire "/etc/pki/mycert.crt" days=30
      '''
      ts_pt = "%Y-%m-%d %H:%M:%S"
      ret = {}
  
      if os.path.isfile(certificate):
          try:
              ret['path'] = certificate
              ret['check_days'] = days
  
              cert = _get_certificate_obj(certificate)
  
              _check_time = datetime.datetime.utcnow() + datetime.timedelta(days=days)
              _expiration_date = cert.get_not_after().get_datetime()
  
              ret['cn'] = _parse_subject(cert.get_subject())['CN']
              ret['will_expire'] = _expiration_date.strftime(ts_pt) <= _check_time.strftime(ts_pt)
          except ValueError as err:
              log.debug('Unable to return details of a sertificate expiration: %s', err)
              log.trace(err, exc_info=True)
  
      return ret