Default Type for Queue needs to be byte[] #1459
Description
This was regressed with 254a9b6 , which changed the default type to JObject. but that breaks byte[].
Script's node marshaller can convert JObject, string --> byte[], so byte[] is the "safest" common denominator.
Note that in JScript, you can skip specifying the 'datatype' in function.json on an output binding and it will just accept anything and convert to byte[].
This is causing the QueueTriggerByteArray test in Script to fail.