Huh? The article describes a massive system and there is a lot of abstraction here, are you suggesting Pivotal was a part of the large abstraction or just grabbing credit for some minor part?
Not that I am aware of. It's possible they contributed to some of our OSS efforts, but I don't believe anything used internally was developed in that manner.
Pivotal ( the company that engulfed Pivotal Labs and Spring ) did contribute the Cloud Foundry integration in Spinnaker. This is not used at Netflix, though.