Add tests for scan coordinator with queryport

Change-Id: I2dc2c42d5fabc66f63cd0b3c6065a5580ceb7f5d
Reviewed-on: http://review.couchbase.org/43035
Reviewed-by: Pratap Chakravarthy <prataprc@couchbase.com>
Reviewed-by: Sarath Lakshman <sarath@couchbase.com>
Tested-by: Sarath Lakshman <sarath@couchbase.com>