show generation results failes

[hryamzik]

ok: [srv01.example.com] => {
    "[Undefined, Undefined]": "[Undefined, Undefined]"
}
fatal: [srv02.example.com]: FAILED! => {"failed": true, "msg": "template error while templating string: expected token ',', got 'string'. String: {{[Undefined, [u'IMPORTANT NOTES:', u' - Congratulations! Your certificate and chain have been saved at', u'   /etc/letsencrypt/live/staging.api.example.com/fullchain.pem. Your', u'   cert will expire on 2017-01-05. To obtain a new or tweaked version', u'   of this certificate in the future, simply run letsencrypt-auto', u'   again. To non-interactively renew *all* of your certificates, run', u'   \"letsencrypt-auto renew\"', u' - If you like Certbot, please consider supporting our work by:', u'', u\"   Donating to ISRG / Let's Encrypt:   https://letsencrypt.org/donate\", u'   Donating to EFF:                    https://eff.org/donate-le']]}}"}