ExecutionLog | The execution error or log message sent by the remote agent. | 
  ExecutionStatus | The execution status object for the scheduler execution. | 
  HostTimeOut | The time to wait for response before either sending test to another host in group or failing. | 
  LogEnabled | Indicates if logging is enabled. | 
  RunAllLocally | Indicates if all tests are to be run on the local host. | 
  RunOnHost | The host on which to execute the test instance. | 
  TdHostName | The host on which to run all tests in the current scheduler execution. | 
  VM_Config | Obsolete. Do not invoke. |