- `notifylevel` will change what gets sent as part of the antivirus
notification emails based on the scan type. For example if set on
SCAN_RESULT_FOUND, it will not notify for any detections, if set to
SCAN_RESULT_ERROR, it will notify for both detections and errors.
- `threshold` will determine how far the lookback is when displaying the
status of the /reports/status (System Status) page. It will display as
an ERROR state if there has been scanner issues within this certain
threshold period
- As part of the above, scanner errors will now trigger a new event
which will be logged as antivirus_scan_data_error or
antivirus_scan_file_error. Due to the nature of it reading from the
logs table, it only works currently for the "Standard logging"
logstore.
