Include new candlepin logs in katello-debug output.

As of candlepin-0.8.30 new logging was introduced which will result in
several new log files in /var/log/candlepin.

Leaving tomcat logs included as these still may contain tomcat/SSL
startup errors.

New version of candlepin is not tagged yet but the directory should already exist and contain an audit.log, previously not included in katello-debug.