*: post-certmanager manifests update

Change-Id: I745c850268c31777c5722a9833c8152a55615aed
Reviewed-on: https://gerrit.hackerspace.pl/c/hscloud/+/1512
Reviewed-by: q3k <q3k@hackerspace.pl>
diff --git a/devtools/issues/redmine.libsonnet b/devtools/issues/redmine.libsonnet
index 2080093..5e656db 100644
--- a/devtools/issues/redmine.libsonnet
+++ b/devtools/issues/redmine.libsonnet
@@ -134,7 +134,7 @@
         metadata+: {
             annotations+: {
                 "kubernetes.io/tls-acme": "true",
-                "certmanager.k8s.io/cluster-issuer": "letsencrypt-prod",
+                "cert-manager.io/cluster-issuer": "letsencrypt-prod",
                 "nginx.ingress.kubernetes.io/proxy-body-size": "0",
             },
         },
@@ -186,7 +186,7 @@
             metadata+: {
                 annotations+: {
                     "kubernetes.io/tls-acme": "true",
-                    "certmanager.k8s.io/cluster-issuer": "letsencrypt-prod",
+                    "cert-manager.io/cluster-issuer": "letsencrypt-prod",
                     "nginx.ingress.kubernetes.io/proxy-body-size": "0",
                 },
             },