Automatic merge from submit-queue

Quobyte Volume plugin

@quofelix and myself developed a volume plugin for [Quobyte](http://www.quobyte.com) which is a software-defined storage solution. This PR allows Kubernetes users to mount a Quobyte Volume inside their containers over Kubernetes.

Here are some further informations about [Quobyte and Storage for containers](http://www.quobyte.com/containers)