@Override
    public void allocatePorts(int start, PortAllocBridge from) {
        if (start == 0) start = BASEPORT;
        from.wantPort(start, "rpc");
        from.allocatePort("http");
    }
@param parent the parent ConfigProducer.
@param index  unique index for all slobroks
config-model/src/main/java/com/yahoo/vespa/model/admin/Slobrok.java