New probes and ganglia readers (from branch feature-446)
poll_xen_kvm.rb - This new probe gets information from XEN and KVM vms.
If it is called with the name of a VM then its monitoring information
is written in standard poll probe way. If called without parameters
a base64-encoded yaml-representation of a hash containing the information
about all the VMs running in the host is returned.
poll_ganglia.rb - This probe gets information from ganglia pushed by gmetric.
Consumes the information generated by poll_xen_kvm.rb
ganglia_probe - Gets host monitoring information from ganglia. It pushes all
metrics that start by OPENNEBULA_
Ganglia.rb - library that holds ganglia reading code