Check for errors in renamed hub.log, now monitoring_router.log (#1764)
Check for errors in renamed hub.log, now monitoring_router.log (#1764)

PR #1711 renamed the Hub component of monitoring to
MonitoringRouter and renamed the log file accordingly, but
did not make this change to CI.
Parsl/parsl,Parsl/parsl,Parsl/parsl,Parsl/parsl