into the local event stream. These events are different then normal emulab
events in that the SITE is set to the URN of the aggregate, and there is
json representation of the slice/sliver status. There are other fields as
well that are not in normal emulab events. These events can mix okay with
emulab events on the local boss, nothing will care about them. But they
will get forwarded to pubsubd at the portal if CLUSTER_PORTAL is set in the
defs file.