When the binding is deleted in openshift we should also delete the variant in UPS. Deleting the binding will trigger the unbind action. This in turn will delete the binding-secret and we will get a DELETED event in the sidecar. This should give us all the information we need to delete the binding.

To delete a variant one can use this REST API: https://aerogear.org/docs/specs/aerogear-unifiedpush-rest/index.html#-808840449