Nodeport service and modified ssh and socket ports

Nodeport service and modified ssh and socket ports

We support now the use of K8s Nodeport services and non standard ssh and
prox socket ports.
In order to use Nodeport service, you need to specify the name of the
service for each prox pod in the rapid.pods file.

Signed-off-by: Luc Provoost <luc.provoost@gmail.com>
Change-Id: I2873b7e22fee042a14b575e772267a9128b7c4f2