public static String toSeed(LoadBalancerId id, NodeType type) {
        return type == NodeType.tenant ? toSeed(id) : toLegacySeed(id.application(), id.cluster());
    }
Evict surplus and failed load balancers, and pre-provision deficit ones. Should only be run by a maintenance job.
node-repository/src/main/java/com/yahoo/vespa/hosted/provision/provisioning/LoadBalancerProvisioner.java