Forward historian stack trace when to platform is unavailable. (I think!)

[craig8]

2016-11-10 21:33:21,029 (forwarderagent-3.6 24626) forwarder.agent ERROR: A timeout has occured so breaking out of publishing 2016-11-10 21:33:21,030 (forwarderagent-3.6 24626) volttron.platform.agent.base_historian ERROR: An unhandled exception occured while publishing. Traceback (most recent call last): File "/home/volttron/volttron-develop/volttron/platform/agent/base_historian.py", line 679, in _process_loop self.publish_to_historian(to_publish_list) File "/home/volttron/.volttron_10500/agents/0abaafe5-076e-406a-b8fc-8de4fc2e60e3/forwarderagent-3.6/forwarder/agent.py", line 289, in publish_to_historian status = Status.from_json(self.vip.health.get_status()) File "/home/volttron/volttron-develop/volttron/platform/messaging/health.py", line 121, in from_json cp = jsonapi.loads(data) File "/home/volttron/volttron-develop/env/local/lib/python2.7/site-packages/zmq/utils/jsonapi.py", line 56, in loads return jsonmod.loads(s, **kwargs) File "/home/volttron/volttron-develop/env/local/lib/python2.7/site-packages/simplejson/init.py", line 516, in loads return _default_decoder.decode(s) File "/home/volttron/volttron-develop/env/local/lib/python2.7/site-packages/simplejson/decoder.py", line 370, in decode obj, end = self.raw_decode(s) File "/home/volttron/volttron-develop/env/local/lib/python2.7/site-packages/simplejson/decoder.py", line 395, in raw_decode ord0 = ord(s[idx]) KeyError: 0

[schandrika]

@schandrika to test