add letsencrypt issuer manifest

infra/prod-us-east-1/k8s/eks-addons/letsencrypt_issuer.yaml

@@ -0,0 +1,19 @@
+apiVersion: cert-manager.io/v1
+kind: ClusterIssuer
+metadata:
+  name: letsencrypt
+spec:
+  acme:
+    server: https://acme-v02.api.letsencrypt.org/directory
+    email: 'smart.contracts@iohk.io'
+    privateKeySecretRef:
+      name: letsencrypt
+    solvers:
+    - http01:
+        ingress:
+          class: traefik
+          ingressTemplate:
+            metadata:
+              annotations:
+                traefik.ingress.kubernetes.io/router.tls: "true"
+                traefik.ingress.kubernetes.io/router.entrypoints: "websecure"