Shows the current status of the last requested stack license
removal request. One of the following values will be returned:
idle (1) - No new removal operation has been requested.
processing (2) - The last request is in progress.
success (3) - The last request was successful.
failure (4) - The last request failed.
Upon completion of a stack license removal operation, the first
read of this object will return a success/failure indication.
Subsequent reads will then return idle(1).