do not submit CRASHED result to ResultsDB
    
    It seems better to only post functional results to ResultsDB (passed,
    failed) and keep execution statuses in ExecDB only. By removing the
    failsafe decorator, any error will crash the whole directive, which will
    ensure that the crash is not sent to ResultsDB, but still reflected in
    ExecDB.
    
    Differential Revision: https://phab.qadevel.cloud.fedoraproject.org/D921