Specifies the status of dispatching operation:
- reset: Clear all the records of the test instance.
- stop: Stop the test instance, if it's running.
- restart: Stop the test instance, if it's running,
and restart the test instance immediately.
- active: The test instance is running; the parameters
of the test instances can't be changed.
- inactive: The test instance doesn't be scheduled;
the parameters of the test instances can be changed.