fix: prepare k3s for external cloud provider

ansible/roles/k3s-agent/defaults/main.yml

@@ -3,3 +3,4 @@ k3s_version: latest
 k3s_server_url: ""
 k3s_token: ""
 k3s_node_ip: ""
+k3s_kubelet_cloud_provider_external: true

ansible/roles/k3s-agent/tasks/main.yml

@@ -16,7 +16,10 @@
     INSTALL_K3S_VERSION: "{{ k3s_version if k3s_version != 'latest' else '' }}"
     K3S_URL: "{{ k3s_server_url }}"
     K3S_TOKEN: "{{ k3s_token }}"
-  command: /tmp/install-k3s.sh agent --node-ip {{ k3s_node_ip }}
+  command: >-
+    /tmp/install-k3s.sh agent
+    --node-ip {{ k3s_node_ip }}
+    {% if k3s_kubelet_cloud_provider_external | bool %}--kubelet-arg=cloud-provider=external{% endif %}
   args:
     creates: /usr/local/bin/k3s-agent
   when: not k3s_agent_binary.stat.exists