Fix/websocket capacity increase (#230)

* Fix invalid variable name invocation
* Fix error responses in websockets
* Increase websocket limits to 50MB max message.  Turn on Pulsar chunking by default.

trustgraph-base/trustgraph/base/consumer_producer.py

@@ -66,6 +66,7 @@ class ConsumerProducer(BaseProcessor):
         self.producer = self.client.create_producer(
             topic=output_queue,
             schema=JsonSchema(output_schema),
+            chunking_enabled=True,
         )
 
         self.consumer = self.client.subscribe(

trustgraph-base/trustgraph/base/producer.py

@@ -34,6 +34,7 @@ class Producer(BaseProcessor):
         self.producer = self.client.create_producer(
             topic=output_queue,
             schema=JsonSchema(output_schema),
+            chunking_enabled=True,
         )
 
     def send(self, msg, properties={}):