simplifying the cluster setup

lab/tasks/install-k3s.yml

@@ -0,0 +1,14 @@
+  - name: Download K3s install script
+    ansible.builtin.get_url:
+      url: https://get.k3s.io/
+      timeout: 120
+      dest: /usr/local/bin/k3s-install.sh
+      owner: root
+      group: root
+      mode: 0755
+
+  - name: Download K3s binary
+    ansible.builtin.command:
+      cmd: /usr/local/bin/k3s-install.sh
+    changed_when: true
+