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.
Merge pull request #3189 from dgoodwin/candlepin-logs

Include new candlepin logs in katello-debug output.