Munin contributed plugins

hide the python code part from shell parsers

This works around a syntax warning of the continuous integration system.
The cause of this warning could have never triggered anyway.
This commit encloses the whole python code safely in a "here" document.

new network plugin added: ath9k

Collect information related to ath9k wireless events and states. * rate control statistics ("rc_stats") * events (dropped, transmitted, beacon loss, ...) * traffic (packets, bytes)

All data is collected for each separate station (in case of multiple...