Returns the default collector settings

def get_default_config(self):
        """
        Returns the default collector settings
        """
        config = super(LibvirtKVMCollector, self).get_default_config()
        config.update({
            'path':     'libvirt-kvm',
            'sort_by_uuid': False,
            'uri':      'qemu:///system',
            'cpu_absolute': False
        })
        return config