@Override
    protected boolean isExpired(Node node) {
        return nodeRepository().zone().cloud().dynamicProvisioning() && super.isExpired(node);
    }
This removes hosts from {@link com.yahoo.vespa.hosted.provision.Node.State#deprovisioned}, in dynamically provisioned
zones, after a grace period.

@author mpolden
node-repository/src/main/java/com/yahoo/vespa/hosted/provision/maintenance/DeprovisionedExpirer.java