[CX] Remote link with alternate address fails w/ internal error if kv[SSL] and mgmt[SSL] ports are not mapped

Came across this while verifying MB-39278

Steps
Setup an EC2 instance and install couchbase in it
Enabled Alternate address on it and configure kv to run on 9000:

curl -v -X PUT -u Administrator:password \
> http://localhost:8091/node/controller/setupAlternateAddresses/external \
> -d hostname=ec2-3-237-24-39.compute-1.amazonaws.com \
> -d kv=9000 \
> -d n1ql=9050

Installed couchbase in a vagrant box
Set up remote link using alternate address of ec2 instance:

[root@node2-mad-hatter-testing-centos7 bin]# ./couchbase-cli analytics-link-setup -c localhost:8091 -u Administrator -p password --create --name testAltLink --dataverse Default --type couchbase --hostname ec2-3-237-24-39.compute-1.amazonaws.com --link-username Administrator --link-password password --encryption none
ERROR: Internal server error, please retry your request

Works fine if kv runs on default port in the ec2 instance