def tearDown(self):
        super(SimpleInstanceTest, self).tearDown()
        CONF.network_label_regex = self.orig_conf
        CONF.ip_start = None
def visitdir(self, dir):
        dir = normalizerootdir(dir, "visitdir")
        if dir == "":
            dir = self._path
        else:
            dir = self._path + "/" + dir
        return self._matcher.visitdir(dir)