cbworkloadgen: When custom port used for UI and n1ql service only error observed as "Host does not have data service",

Created external machine through aws for windows.

1. Executed:

couchbase-cli setting-alternate-address -c 10.0.1.180 -u Administrator -p password --set --node 10.0.1.180 --hostname ec2-34-221-133-165.us-west-2.compute.amazonaws.com:9000 --ports mgmt=9000,n1ql=9050

2. To access custom ports followed steps from: https://docs.couchbase.com/server/7.0/install/install-ports.html#map-custom-ports 

that is added "{rest_port, 9000}. {query_port, 9050}. " port details in static_config and deleted config.dat file.

3. From local machine executed :

cbworkloadgen -n ec2-34-221-133-165.us-west-2.compute.amazonaws.com:9000 -u Administrator -p password -i 50000 -b Bucket1 -v --prefix abc

4. Error observed "Host does not have data service"

Expected is when we are not selecting any custom port than it should select default port but in this case i got error.

5. Now again created alternate address and added port details for data service also as " kv 11210" which is default port.

6. Executed cbworkloadgen command again and it worked.     

I collected the logs quite late.