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1. timeout when publishing to ifmap-server (mapclient.call())
   when timeout happens keep retrying
2. ifmap-server code needs to inspect healthcheck object publish and if it misses n of them, exit() OR
     config-nodemgr keeps reading healthcheck object from ifmap-server and if it can't read in n secs or value is stale, kill ifmap-server
3. control-node keeps reading healthcheck object from ifmap and it sees stale, move to a new ifmap-server
4. ifmap-publish-greenlet enqueue finds q-full, no change from current