This is for: https://github.com/kubernetes/kubernetes/issues/24121

Photon Controller is an open-source cloud management platform. More
information is available at:
http://vmware.github.io/photon-controller/

This commit provides initial support for Photon Controller. The
following features are tested and working:
- kube-up and kube-down
- Basic pod and service management
- Networking within the Kubernetes cluster
- UI and DNS addons

It has been tested with a Kubernetes cluster of up to 10
nodes. Further work on scaling is planned for the near future.

Internally we have implemented continuous integration testing and will
run it multiple times per day against the Kubernetes master branch
once this is integrated so we can quickly react to problems.

A few things have not yet been implemented, but are planned:
- Support for kube-push
- Support for test-build-release, test-setup, test-teardown

Assuming this is accepted for inclusion, we will write documentation
for the kubernetes.io site.

We have included a script to help users configure Photon Controller
for use with Kubernetes. While not required, it will help some
users get started more quickly. It will be documented.

We are aware of the kube-deploy efforts and will track them and
support them as appropriate.