update docs for kubernetes support

Signed-off-by: Madhav Puri <[email protected]>

README.md

@@ -9,7 +9,8 @@ Contiv Cluster intends on supporting a range of clustering software such as Dock
 Apache Mesos, and others. Currently, Contiv Cluster supports the following cluster formation:
 
 * **Cluster Type**: Docker [Unified Control Plane]
-(https://www.docker.com/products/docker-universal-control-plane) | Docker [Swarm](https://docs.docker.com/swarm/)
+(https://www.docker.com/products/docker-universal-control-plane) | Docker [Swarm](https://docs.docker.com/swarm/) |
+ [Kubernetes](http://kubernetes.io/)
 * **Cluster OS**: [CentOS 7.2](https://www.centos.org/)
 * **Cluster Target**: Bare Metal | [Vagrant](https://www.vagrantup.com/)
 

management/ansible_vars.md

@@ -50,7 +50,7 @@ There are several variables that are made available to provide a good level of p
   ```
 
 ####Scheduler stack
-- **scheduler_provider** identifies the scheduler stack to use. We support two stacks viz. `native-swarm` and `ucp-swarm`. The first brings-up a swarm cluster using the stock swarm image from dockerhub. The seconds brings-up a ucp cluster which bundles swarm in it.
+- **scheduler_provider** identifies the scheduler stack to use. We support three stacks viz. `native-swarm`, `ucp-swarm` and `kubernetes`. The first brings-up a swarm cluster using the stock swarm image from dockerhub. The second brings-up a ucp cluster which bundles swarm in it. And the third brings up a kubernetes cluster using the hyberkube container image.
   - **scheduler_provider** is specified as a JSON string
   ```
   {"scheduler_provider": "ucp-swarm"}
@@ -117,5 +117,13 @@ There are several variables that are made available to provide a good level of p
     {"fwd_mode": "routing"}
     ```
 
+  **Following are the relevant variables when `scheduler_provider` is set to `kubernetes`**
+  - **netplugin_mode** specifies whether netplugin shall operate in docker's libnetwork plugin mode or the cni mode of kubernetes. Netplugin supports two modes viz. `docker` (default) and `kubernetes`
+    - **netplugin_mode** is specified as a JSON string
+    ```
+    {"netplugin_mode": "kubernetes"}
+    ```
+    **Note**: when `scheduler_provider` is set to `kubernetes`, the `netplugin_mode` must be set to `kubernetes`, otherwise it can be left unset.
+
 ####Contiv Storage
 **TBD**