Success message should include port

[WilliamDenniss]

We should include the port in the success message "Service exposed on ${ip}", to make it clear which port the service was exposed on.

kubehost/kubehost

Line 412 in 71d2a85

echo "Service exposed on ${ip}"

[WilliamDenniss]

Helps with #7, by making it more clear what kubehost is doing, and would have avoided #2 and #8.