cluster: fix metallb, add nginx ingress controller
diff --git a/cluster/kube/cluster.jsonnet b/cluster/kube/cluster.jsonnet
index c79a827..800e47a 100644
--- a/cluster/kube/cluster.jsonnet
+++ b/cluster/kube/cluster.jsonnet
@@ -5,6 +5,7 @@
 local metrics = import "lib/metrics.libsonnet";
 local calico = import "lib/calico.libsonnet";
 local metallb = import "lib/metallb.libsonnet";
+local nginx = import "lib/nginx.libsonnet";
 
 local Cluster(fqdn) = {
     local cluster = self,
@@ -51,6 +52,8 @@
     metrics: metrics.Environment {},
     // Metal Load Balancer
     metallb: metallb.Environment {},
+    // Main nginx Ingress Controller
+    nginx: nginx.Environment {},
 };