ganglia framework (step 1)
add bidirectional discovery between generator and collector
include ganglia metad service + discovery
changes
correct gmond/gmetad service startup/config
correct access permissions + log files
1st working Ganglia collector/generator playground.
TODO: web-interface
ganglia: add web interface installation (from package with apache2)
Merge branch 'develop' into move_monitoring_out_of_core-system

Conflicts:
	cookbooks/storm/recipes/ui.rb