Fix dump of hello response (with error message)
Fix dump of hello response (with error message)

Change-Id: I9f44d00515f39104bd7092c2e760d01f5488ee58
Reviewed-on: http://review.couchbase.org/87594
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Dave Rigby <a09264da4832c7ff1d3bf1608a19f4b870f93750@couchbase.com>

daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine