Add Gateway CRD

This will be used to store and report the cluster-local engine
status.

Signed-off-by: Stephen Kitt <skitt@redhat.com>

submariner/templates/crd.yaml

@@ -26,4 +26,18 @@ spec:
     kind: Endpoint
     plural: endpoints
   scope: Namespaced
+---
+apiVersion: apiextensions.k8s.io/v1beta1
+kind: CustomResourceDefinition
+metadata:
+  name: gateways.submariner.io
+  annotations:
+    "helm.sh/hook": crd-install
+spec:
+  group: submariner.io
+  version: v1
+  names:
+    kind: Gateway
+    plural: gateways
+  scope: Namespaced
 {{- end -}}