feat: added longhorn addon (#1204)

* added longhorn addon

* enabled longhorn in the tests

* fix: move longhorn to longhorn-system namespace

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

* fix: move longhorn to longhorn-system namespace

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

* fix: move longhorn to longhorn-system namespace

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

* fix: move longhorn to longhorn-system namespace

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

---------

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

bootstrap/templates/kubernetes/flux/repositories/helm/kustomization.yaml.j2

@@ -15,6 +15,7 @@ resources:
   - ./jetstack.yaml
   - ./k8s-gateway.yaml
   - ./kubernetes-dashboard.yaml
+  - ./longhorn.yaml
   - ./metrics-server.yaml
   - ./openebs.yaml
   - ./piraeus.yaml