add antrea as network policy provider

content/en/docs/tasks/administer-cluster/network-policy-provider/antrea-network-policy.md

@@ -0,0 +1,24 @@
+---
+title: Use Antrea for NetworkPolicy
+content_type: task
+weight: 10
+---
+
+<!-- overview -->
+This page shows how to install and use Antrea CNI plugin on Kubernetes.
+For background on Project Antrea, read the [Introduction to Antrea](https://antrea.io/docs/).
+
+## {{% heading "prerequisites" %}}
+
+You need to have a Kubernetes cluster. Follow the
+[kubeadm getting started guide](/docs/reference/setup-tools/kubeadm/) to bootstrap one.
+
+<!-- steps -->
+
+## Deploying Antrea with kubeadm
+
+Follow [Getting Started](https://github.com/vmware-tanzu/antrea/blob/main/docs/getting-started.md) guide to deploy Antrea for kubeadm.
+
+## {{% heading "whatsnext" %}}
+
+Once your cluster is running, you can follow the [Declare Network Policy](/docs/tasks/administer-cluster/declare-network-policy/) to try out Kubernetes NetworkPolicy.