feat(cluster): move system-upgrade-controller to crds and apps

Signed-off-by: Devin Buhl <devin@buhl.casa>

cluster/core/kustomization.yaml

@@ -5,4 +5,3 @@ resources:
   - cert-manager
   - kube-system
   - metallb-system
-  - system-upgrade

cluster/core/namespaces/kustomization.yaml

@@ -4,3 +4,4 @@ resources:
   - cert-manager.yaml
   - metallb-system.yaml
   - networking.yaml
+  - system-upgrade.yaml

cluster/core/namespaces/system-upgrade.yaml

@@ -0,0 +1,5 @@
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: system-upgrade

cluster/core/system-upgrade/kustomization.yaml

@@ -1,8 +0,0 @@
----
-apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
-resources:
-  - github.com/rancher/system-upgrade-controller?ref=v0.9.1
-images:
-  - name: rancher/system-upgrade-controller
-    newTag: v0.9.1