add gateway to external dns

cluster/platform/external-dns/values.yaml

@@ -35,10 +35,11 @@ env:
 domainFilters:
   - local.mk-labs.cloud
 
-# Only process Ingress resources (and Services with the right annotation)
+# Sources: ingress, service, and Gateway API HTTPRoutes
 sources:
   - ingress
   - service
+  - gateway-httproute
 
 # Annotation to opt services into DNS management:
 # external-dns.alpha.kubernetes.io/hostname: myservice.local.mk-labs.cloud