To cater multiple Cartridge/Container ports, we need to have a service proxy for each port.
Tested the implementation and seems like use of container port doesn't work with the current Kubernetes API (v1beta1). (i.e. when we set a container port to Kubernetes proxy, Kubernetes proxy failed to route messages to containers.)
I think we have to migrate to latest Kubernetes API/binaries to get it to work.
I've committed a tentative implementation to STRATOS-910 branch for time being.