meta model subscriber on resource registration.

        SecurityHub Findings Filter

def register_resources(klass, registry, resource_class):
        """ meta model subscriber on resource registration.

        SecurityHub Findings Filter
        """
        for rtype, resource_manager in registry.items():
            if not resource_manager.has_arn():
                continue
            if 'post-finding' in resource_manager.action_registry:
                continue
            resource_class.filter_registry.register('finding', klass)