Add Alpine Linux configuration

Signed-off-by: Jiayi Hu <jiayi.ghu@gmail.com>

roles/k3s/node/tasks/prereq/default.yml

@@ -0,0 +1,15 @@
+---
+- name: Copy K3s service file
+  template:
+    src: "k3s.service.j2"
+    dest: "{{ systemd_dir }}/k3s-node.service"
+    owner: root
+    group: root
+    mode: 0755
+
+- name: Enable and check K3s service
+  systemd:
+    name: k3s-node
+    daemon_reload: yes
+    state: restarted
+    enabled: yes