REFACTOR(traefik): switch from HAProxy

- to Traefik ingress controller
- Update all ingress files to use ingressClassName: traefik
- Update cert-manager ClusterIssuer to use traefik class
- Remove haproxy.org annotations from ingress files
- Update vault helm-values to use traefik

velero/ingress.yaml

@@ -6,7 +6,7 @@ metadata:
   annotations:
     cert-manager.io/cluster-issuer: letsencrypt-prod
 spec:
-  ingressClassName: haproxy
+  ingressClassName: traefik
   tls:
     - hosts:
         - velero0213.kro.kr