refactor: yml -> yaml

Signed-off-by: Tuan-Dat Tran <tuan-dat.tran@tudattr.dev>

roles/k3s_loadbalancer/tasks/installation.yaml

@@ -0,0 +1,20 @@
+---
+- name: Update apt cache
+  ansible.builtin.apt:
+    update_cache: true
+  become: true
+
+- name: Install dependencies for apt to use repositories over HTTPS
+  ansible.builtin.apt:
+    name: "{{ item }}"
+    state: present
+  loop:
+    - qemu-guest-agent
+  become: true
+
+- name: Install Nginx
+  ansible.builtin.apt:
+    name:
+      - nginx-full
+    state: present
+  become: true