Kubelet: add proposal for HyperContainer runtime

Signed-off-by: Pengfei Ni <feiskyer@gmail.com>

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+<h2>PLEASE NOTE: This document applies to the HEAD of the source tree</h2>
+
+If you are using a released version of Kubernetes, you should
+refer to the docs that go with that version.
+
+Documentation for other releases can be found at
+[releases.k8s.io](http://releases.k8s.io).
+</strong>
+--
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+Kubelet HyperContainer Container Runtime
+=======================================
+
+Authors: Pengfei Ni (@feiskyer), Harry Zhang (@resouer)
+
+## Abstract
+
+This proposal aims to support [HyperContainer](http://hypercontainer.io) container
+runtime in Kubelet.
+
+## Motivation
+
+HyperContainer is a Hypervisor-agnostic Container Engine that allows you to run Docker images using
+hypervisors (KVM, Xen, etc.). By running containers within separate VM instances, it offers a
+hardware-enforced isolation, which is required in multi-tenant environments.
+
+## Goals
+
+1. Complete pod/container/image lifecycle management with HyperContainer.
+2. Setup network by network plugins.
+3. 100% Pass node e2e tests.
+4. Easy to deploy for both local dev/test and production clusters.
+
+## Design
+
+The HyperContainer runtime will make use of the kubelet Container Runtime Interface. [Fakti](https://github.com/kubernetes/frakti) implements the CRI interface and exposes
+a local endpoint to Kubelet. Fakti communicates with [hyperd](https://github.com/hyperhq/hyperd)
+with its gRPC API to manage the lifecycle of sandboxes, containers and images.
+
+![frakti](https://cloud.githubusercontent.com/assets/676637/18940978/6e3e5384-863f-11e6-9132-b638d862fd09.png)
+
+## Limitations
+
+Since pods are running directly inside hypervisor, host network is not supported in HyperContainer
+runtime.
+
+## Development
+
+The HyperContainer runtime is maintained by <https://github.com/kubernetes/frakti>.
+
+
+
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