'Adds string representations of enums to a ThirftTaskTrackerStatus'

def _fixup_tasktracker(self, tracker):

    if (not tracker.taskReports):
        return tracker
    for tts in tracker.taskReports:
        fixup_enums(tts.taskID.taskID, {'taskType': ThriftTaskType})
        self._fixup_taskstatus(tts)
