Fix: Exclude rotated or compressed logs from backup

[sven-ruess]

General information

omd backup is excluding only current log files with --no-logs. It should exclude all existing log files.

Bug reports

omd backup is used on linux distros and appliance. It behaves on all platform the same way.
If you create a backup with omd backup --no-logs only current log file is excluded. Rotated or
compressed log files will be added to backup. Those files should also be excluded.

Proposed changes

Exclude from backups log files like

• liveproxyd.log.1
• liveproxyd.log.2.gz
• liveproxyd.log.3.gz
• dcd.log.1
• dcd.log.2.gz
• dcd.log.3.gz
• ...