update docs for new addons

docs/book/src/topics/addons.md

@@ -1,6 +1,6 @@
 # Overview
 
-This section provides examples for addons for self-managed clusters.
+This section documents addons for self-managed clusters.
 
 ```admonish note
 Currently, all addons are installed via 
@@ -12,37 +12,82 @@ For more information, please refer to the
 [CAAPH Quick Start](https://github.com/kubernetes-sigs/cluster-api-addon-provider-helm/blob/main/docs/quick-start.md).
 ```
 
-# CNI
+```admonish note
+The [Linode Cloud Controller Manager](#linode-cloud-controller-manager) and
+[Linode Blockstorage CSI Driver](#linode-blockstorage-csi-driver) addons require the `ClusterResourceSet` feature flag
+to be set on the management cluster.
 
-```admonish warning
-By default, the CNI plugin is not installed for self-managed clusters.
+This feature flag is enabled by default in the KIND cluster created by `make tilt-cluster`.
 
-To install a CNI, ensure that your `Cluster` is labeled with one of the below CNI options.
+For more information, please refer to [the ClusterResourceSet page in The Cluster API Book](https://cluster-api.sigs.k8s.io/tasks/experimental-features/cluster-resource-set).
 ```
 
-## Cilium
+
+## Contents
+
+<!-- TOC depthFrom:2 -->
+
+- [CNI](#cni)
+  - [Cilium](#cilium)
+- [CCM](#ccm)
+  - [Linode Cloud Controller Manager](#linode-cloud-controller-manager)
+- [Container Storage](#container-storage)
+  - [Linode Blockstorage CSI Driver](#linode-blockstorage-csi-driver)
+
+<!-- /TOC -->
+
+## CNI
+
+In order for pod networking to work properly, a Container Network Interface (CNI) must be installed.
+
+### Cilium
+
+```admonish success title=""
+Installed by default
+```
 
 To install [Cilium](https://cilium.io/) on a self-managed cluster, simply apply the `cni: cilium`
 label on the `Cluster` resource if not already present.
 
 ```bash
-kubectl label cluster $CLUSTER_NAME cni=cilium
+kubectl label cluster $CLUSTER_NAME cni=cilium --overwrite
 ```
 
-Cilium will then be automatically installed via CAAPH into the labeled self-managed cluster.
+Cilium will then be automatically installed via CAAPH into the labeled cluster.
 
-# CCM
+## CCM
 
 In order for the `InternalIP` and `ExternalIP` of the provisioned Nodes to be set correctly,
-the [linode-cloud-controller-manager (linode-ccm)](https://github.com/linode/linode-cloud-controller-manager)
-must be installed into provisioned clusters.
+a Cloud Controller Manager (CCM) must be installed.
+
+### Linode Cloud Controller Manager
+
+```admonish success title=""
+Installed by default
+```
+
+To install the [linode-cloud-controller-manager (linode-ccm)](https://github.com/linode/linode-cloud-controller-manager)
+on a self-managed cluster, simply apply the `ccm: linode`
+label on the `Cluster` resource if not already present.
+
+```bash
+kubectl label cluster $CLUSTER_NAME ccm=linode --overwrite
+```
+
+The linode-ccm will then be automatically installed via CAAPH into the labeled cluster.
+
+## Container Storage
+
+In order for stateful workloads to create PersistentVolumes (PVs), a storage driver must be installed.
 
+### Linode Blockstorage CSI Driver
 
-To install the linode-ccm on a self-managed cluster, simply apply the `ccm: linode`
+To install the [linode-blockstorage-csi-driver](https://github.com/linode/linode-blockstorage-csi-driver)
+on a self-managed cluster, simply apply the `csi-driver: linode`
 label on the `Cluster` resource if not already present.
 
 ```bash
-kubectl label cluster $CLUSTER_NAME ccm=linode
+kubectl label cluster $CLUSTER_NAME csi-driver=linode --overwrite
 ```
 
-The linode-ccm will then be automatically installed via CAAPH into the labeled self-managed cluster.
+The linode-blockstorage-csi-driver will then be automatically installed via CAAPH into the labeled cluster.