Returns the default collector settings

def get_default_config(self):
        """
        Returns the default collector settings
        """
        config = super(HadoopCollector, self).get_default_config()
        config.update({
            'path':      'hadoop',
            'metrics':   ['/var/log/hadoop/*-metrics.out'],
            'truncate':  False,
        })
        return config