Comment 4 for bug 1988281

It was done like that in the past intentionally and heartbeat was moved to separate thread to be able to send messages to neutron server even when agent is busy. It was done like that to fix problem with "flapping" agents and rescheduling networks from "dead" agents to other ones which are alive.
I agree with Rodolfo and Brian that we could maybe propose more fine-grained statuses for agents but I think that it should be opened as new RFE and I'm going to close that bug now.