removed forcing renew, no-autoupgrade

only renew, no force fix and do upgrades
https://github.com/modoboa/modoboa/issues/2129

modoboa_installer/ssl.py

@@ -104,7 +104,7 @@ class LetsEncryptCertificate(CertificateBackend):
                 self.hostname, self.config.get("letsencrypt", "email")))
         with open("/etc/cron.d/letsencrypt", "w") as fp:
             fp.write("0 */12 * * * root certbot renew "
-                     "--quiet --no-self-upgrade --force-renewal\n")
+                     "--quiet\n")
         cfg_file = "/etc/letsencrypt/renewal/{}.conf".format(self.hostname)
         pattern = "s/authenticator = standalone/authenticator = nginx/"
         utils.exec_cmd("perl -pi -e '{}' {}".format(pattern, cfg_file))