UncleanLeaderElectionEnable Controller Event
UncleanLeaderElectionEnable is a controller event that transition the KafkaController to UncleanLeaderElectionEnable state.
UncleanLeaderElectionEnable is enqueued when KafkaController is requested to enableDefaultUncleanLeaderElection.
Processing UncleanLeaderElectionEnable
When processed (on the controller-event-thread), KafkaController is requested to processUncleanLeaderElectionEnable.