kata-deploy: Reestructure the installing section

Let's move the specific installation instructions, such as for k3s,
upper in the document.

This helps reading (and also skipping) according to what the user
is looking for.

Signed-off-by: Fabiano Fidêncio <fabiano@fidencio.org>

tools/packaging/kata-deploy/README.md

@@ -11,7 +11,25 @@ be utilized to install Kata Containers on a running Kubernetes cluster.
 
 ### Install Kata on a running Kubernetes cluster
 
-#### Installing the latest image
+#### k3s cluster
+
+For your [k3s](https://k3s.io/) cluster, run:
+
+```sh
+$ git clone github.com/kata-containers/kata-containers
+```
+
+Check and switch to the stable branch of your choice, if wanted, and then run:
+
+```bash
+$ cd kata-containers/kata-containers/tools/packaging/kata-deploy
+$ kubectl apply -f kata-rbac/base/kata-rbac.yaml
+$ kubectl apply -k kata-deploy/overlays/k3s
+```
+
+#### Vanilla Kubernetes cluster
+
+##### Installing the latest image
 
 The latest image refers to pre-release and release candidate content.  For stable releases, please, use the "stable" instructions.
 
@@ -20,7 +38,7 @@ $ kubectl apply -f https://raw.githubusercontent.com/kata-containers/kata-contai
 $ kubectl apply -f https://raw.githubusercontent.com/kata-containers/kata-containers/main/tools/packaging/kata-deploy/kata-deploy/base/kata-deploy.yaml
 ```
 
-#### Installing the stable image
+##### Installing the stable image
 
 The stable image refers to the last stable releases content.
 
@@ -32,17 +50,6 @@ $ kubectl apply -f https://raw.githubusercontent.com/kata-containers/kata-contai
 $ kubectl apply -f https://raw.githubusercontent.com/kata-containers/kata-containers/main/tools/packaging/kata-deploy/kata-deploy/base/kata-deploy-stable.yaml
 ```
 
-#### For your [k3s](https://k3s.io/) cluster, do:
-
-```sh
-$ GO111MODULE=auto go get github.com/kata-containers/kata-containers
-```
-
-```bash
-$ cd $GOPATH/src/github.com/kata-containers/kata-containers/tools/packaging/kata-deploy
-$ kubectl apply -k kata-deploy/overlays/k3s
-```
-
 #### Ensure kata-deploy is ready
 ```bash
 $ kubectl -n kube-system wait --timeout=10m --for=condition=Ready -l name=kata-deploy pod