refactor: yml -> yaml

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

roles/k3s_server/tasks/main.yaml

@@ -14,16 +14,16 @@
   register: k3s_status
 
 - name: Install primary k3s server
-  include_tasks: primary_installation.yml
+  include_tasks: primary_installation.yaml
   when: ansible_default_ipv4.address == k3s_primary_server_ip
 
 - name: Get token from primary k3s server
-  include_tasks: pull_token.yml
+  include_tasks: pull_token.yaml
 
 - name: Install seconary k3s servers
-  include_tasks: secondary_installation.yml
+  include_tasks: secondary_installation.yaml
   when: ansible_default_ipv4.address != k3s_primary_server_ip
 
 - name: Set kubeconfig on localhost
-  include_tasks: create_kubeconfig.yml
+  include_tasks: create_kubeconfig.yaml
   when: ansible_default_ipv4.address == k3s_primary_server_ip