Comment 12 for bug 1378327

When running logrotate manually with this command
logrotate -f /etc/logrotate.conf
we can observe this error
error: 20-fuel-docker.conf:3 duplicate log entry for /var/log/kern.log

To avoid this:
add to /etc/logrotate.conf before(this is important) 'include /etc/logrotate.d' directive this line:
tabooext + .ignoredaily

After that
mv /etc/logrotate.d/20-fuel-docker.conf /etc/logrotate.d/20-fuel-docker.conf.ignoredaily

Now logrotate will ignore file with hourly log rotation options /etc/logrotate.d/20-fuel-docker.conf.ignoredaily, and we get rid of "duplicate log entry" message.

I think this modification should be added both to fuel master node and to rsyslog container.