Fixing when mesos-agent is unreachable for log fetching.
Fixing when mesos-agent is unreachable for log fetching.

If we couldn't get the logs from the agent, it would block inside the
case <-timer select making the main thread not be able to handle
messages sent to StatusUpdate nor ResourceOffers resulting in consuming
the entire cluster :(. This is a stop gap until I figure out how to
properly fix this.

yp-engineering/mesos-runonce