Returns the default collector settings

def get_default_config(self):
        """
        Returns the default collector settings
        """
        config = super(ConnTrackCollector, self).get_default_config()
        config.update({
            "path":  "conntrack",
            "dir":   "/proc/sys/net/ipv4/netfilter,/proc/sys/net/netfilter",
            "files": "ip_conntrack_count,ip_conntrack_max,"
                     "nf_conntrack_count,nf_conntrack_max",
        })
        return config