convert Probe from event-source to regular actor
implement retired behavior in probe
keep track of lsn in registry and probe system
keep track of generation in probe and state service
initialize probe state in state manager

* track currentLsn in state manager
* disable notification rule parser logging for now
fix race condition tracking probe systems

* fixed race condition bug triggered during registry-manager processor
  recovery where probeSystems is updated before Terminated message is
  received, so the wrong probe system actor is removed