Javadoc
Set deregister timeout. This is optional field, which is a timeout in the same time format as Interval and TTL.
If a check is associated with a service and has the critical state for more than this configured value,
then its associated service (and all of its associated checks) will automatically be deregistered.
The minimum timeout is 1 minute, and the process that reaps critical services runs every 30 seconds,
so it may take slightly longer than the configured timeout to trigger the deregistration.
This should generally be configured with a timeout that's much, much longer than any expected recoverable outage
for the given service.