Changes

[http://exchange.munin-monitoring.org/plugins/openvzcpu/details There is a plugin available on the Munin Exchange web site] which tracks CPU usage accross different containers. [http://exchange.munin-monitoring.org/plugins/openvz_/details A second is also available via the Munin plugin exchange] which tracks beancounter values. Additionally, there are several plugins available on this page to monitor beancounter values in [http://munin.projects.linpro.no/ Munin].The third one tries to combine the other two. (FIXME, maybe these should live in the Munin Exchange too?)