Consume events from Hemdal.Event to generate the notifications
via Hemdal.Notifier. It's based on the configuration from the
Hemdal.Config.Notifier module and based on the configuration
for the log_level and the level of the event, it could be
reported or not.
The log levels could be:
debugit's reporting everything to the notifier.warnnotifies if the previous status is different from the new one.errornotifies only if the change is from/to error status.