Kubernetes NodePort must have 'name' if multiple created

Kubernetes NodePort must have 'name' if multiple created

In Kubernetes context, service NodePort can contain more than one port
defined. Actually, by default port SSH (22) is always created. If more
than one port is defined in the service template, 'name' parameter is
mandatory.

Names must be lowercase, containing alphanumeric characters or '-'.

Verification regex used by Kubernetes: [a-z0-9]([-a-z0-9]*[a-z0-9])?

JIRA: YARDSTICK-1324

Change-Id: I82791761d8eae24196c2f16aee9900af28d44c57
Signed-off-by: Rodolfo Alonso Hernandez <rodolfo.alonso.hernandez@intel.com>