cluster/prodaccess: fix cert migration bug

Change-Id: I7426e60731b09c571aa7385f5213e998f04675a6
Reviewed-on: https://gerrit.hackerspace.pl/c/hscloud/+/1510
Reviewed-by: ironbound <ironbound@hackerspace.pl>
diff --git a/cluster/prodaccess/prodaccess.go b/cluster/prodaccess/prodaccess.go
index 522f814..1153bab 100644
--- a/cluster/prodaccess/prodaccess.go
+++ b/cluster/prodaccess/prodaccess.go
@@ -44,7 +44,7 @@
 	}
 
 	cp := x509.NewCertPool()
-	if ok := cp.AppendCertsFromPEM(certs.Data["ca-kube-new.crt"]); !ok {
+	if ok := cp.AppendCertsFromPEM(certs.Data["ca-kube.crt"]); !ok {
 		glog.Exitf("Could not load k8s CA")
 	}