feat(kubernetes): add initial setup for ArgoCD, Cert-Manager, MetalLB, and Traefik

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

roles/kubernetes_argocd/templates/ingress.yml.j2

@@ -0,0 +1,26 @@
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: argocd-ingress
+  namespace: argocd
+  annotations:
+    traefik.ingress.kubernetes.io/router.entrypoints: websecure
+    traefik.ingress.kubernetes.io/router.tls: "true"
+    cert-manager.io/cluster-issuer: "{{ argocd_cert_resolver }}"
+    traefik.ingress.kubernetes.io/router.middlewares: default-redirect-https@kubernetescrd
+spec:
+  rules:
+    - host: {{ argocd_hostname }}
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: argocd-server
+                port:
+                  number: 80
+  tls:
+    - hosts:
+        - {{ argocd_hostname }}
+      secretName: argocd-tls-secret