when testing against multiple domain certificates (where CN is not part of the cert but the hostnames are listed in the "Certificate Subject Alternative Names"-Extention):
2.0: "OK - Certificate 'Unknown CN' will expire on 12/16/2016 23:59." HEAD+#1174: "OK - Certificate '' will expire on Fri Dec 16 23:59:00 2016." -- Reply to this email on GitHub: https://github.com/monitoring-plugins/monitoring-plugins/pull/1174#issuecomment-50449254
