Logging line from harness should be reduced

In some cases there is too much loggingin gkfs.py, it could be solved with a small wait between checks or removing that log line, which does not give any information.

        while perf_counter() - init_time < timeout:
            try:
                logger.debug(f"checking log file")
                with open(self.logdir / gkfwd_daemon_log_file) as log: