zmq publisher already has the computer/node name information
per commit:
openstack-infra/zmq-event-publisher 36ca349
we just need to pull it out of the event and pass it along as
a new field
Change-Id: Iddefdf74ddf170eaafcd82c5e1f5b0389651cf89
Separate the jenkins log client and worker bits into a new module
called log_processor with ::client and ::worker classes.
Instantiate two workers on each logstash worker node.
Change-Id: I7cfec410983c25633e6b555f22a85e9435884cfb