gocbcore timeout/hang if connection string is not data service

MDS service:

host1: Data
host2: Query, Index

Run gocbcore client from the host2 passing connection string as "couchbase://localhost"
If connection string points to data service host it works.

Repro: https://github.com/couchbaselabs/cbgoclibench/blob/master/main.go

./cbgoclibench --host 127.0.0.1 --doc-count=100 --duration=10s gocbcore