Returns the default collector settings

def get_default_config(self):
        """
        Returns the default collector settings
        """
        config = super(PuppetAgentCollector, self).get_default_config()
        config.update({
            'yaml_path': '/var/lib/puppet/state/last_run_summary.yaml',
            'path':     'puppetagent',
        })
        return config