Create Service of type NodePort without an ingress

[cscetbon]

serverless-kubeless should allow users to choose the type they want even if they don't want an Ingress https://github.com/serverless/serverless-kubeless/blob/master/lib/deploy.js#L117

[cscetbon]

Even more control should be given like the possibilities to add annotations or labels to a service. annotations are currently pushed to the pod/function not the service