refactor: yml -> yaml

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

vars/group_vars/kubernetes/vars.yaml

@@ -0,0 +1,19 @@
+domain: "{{ internal_domain }}"
+
+cert_resolver: "letsencrypt-prod"
+cert_manager_issuer_name: "{{ cert_resolver }}"
+cert_manager_email: "me+acme@tudattr.dev"
+
+traefik_cert_resolver: "{{ cert_resolver }}"
+traefik_dashboard_hostname: "traefik.k3s.{{ domain }}"
+
+argocd_cert_resolver: "{{ cert_resolver }}"
+argocd_hostname: "argocd.k3s.{{ domain }}"
+
+metallb_ip_range: "192.168.20.240-192.168.20.250"
+
+kubernetes_nfs_server_host: "{{ nfs_server }}"
+
+argocd_git_repository: https://git.seyshiro.de/tudattr/homelab-argocd
+argocd_git_username: tudattr
+argocd_git_pat: "{{ vault_kubernetes.argocd_git_pat }}"