Allow Services to be created using a Template

[kurktchiev]

I am running into a scenario which requires me to modify the way the services get deployed for a cluster. In my case I would like to set all the services to be headless, but there are usecases where you want those services to use LoadBalancer or NodePort, depending on the usage.

[mikedickey]

Merged to develop for inclusion in 0.1.0. See new serviceTemplate configuration parameter for new v1alpha2 CRDs.