@Override
    public String toString() {
        return "HostInfo{" +
                ", status=" + status +
                ", suspendedSince=" + suspendedSince +
                '}';
    }
The instant the host status was set to a suspended status. Is preserved when transitioning
between suspended statuses. Returns empty if and only if NO_REMARKS.
orchestrator/src/main/java/com/yahoo/vespa/orchestrator/status/HostInfo.java