Updates migration status for a given transfer ID.
When you implement the listener interface in your server app, your cloud app must use this operation to:
Report progress on your app migration so that admin users can monitor it in the Cloud Migration Assistant.
Settle the transfer at the end of your migration by updating its status to
FAILED so that admin users know it's finished.
Once a transfer is settled, subsequent requests for that transfer ID return an HTTP 403 error.