We must maintain a map of interface level ThresholdEntity objects on a
per interface basis in order to maintain separate exceeded counts and the
like for each of a node's interfaces.
This method is responsble for inserting new entries into the ipInterface
table for each interface found to be associated with the suspect
interface during the capabilities scan.
Returns true if an auto acknowledgment exists for the specificed event,
such that the arrival of some second, different event will auto
acknowledge the event passed as an argument.