refactor: yml -> yaml

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

roles/reverse_proxy/tasks/50_netcup_dns.yaml

@@ -0,0 +1,14 @@
+---
+# - name: Setup DNS on Netcup
+#   community.general.netcup_dns:
+#     api_key: "{{ netcup_api_key }}"
+#     api_password: "{{ netcup_api_password }}"
+#     customer_id: "{{ netcup_customer_id }}"
+#     domain: "{{ domain }}"
+#     name: "{{ service.name }}"
+#     type: "A"
+#     value: "{{ hostvars['docker-lb'].ansible_default_ipv4.address }}"
+#   loop: "{{ services }}"
+#   loop_control:
+#     loop_var: service
+#   delegate_to: localhost