Need check_mk sensor that looks at update_manual_mappings log
Once 9871 is done, a check_mk sensor that checks the log needs to be deployed.
There are similar scripts out there already, for example:
The sensor should:
1. Report the script runtime as performance data
2. Calculate the meantime for the script to run, if it's deviated by 50% issue a WARNING, if it's deviated by 200% issue a Critical
3. Make sure that the script runs x3 it's frequency, this is, if the script takes 5 minutes to run, the cron should run every 15 minutes.