For software that interfaces with Bitcoin Core via RPC, it can be useful to know whether the fRelayTxes flag is set. It could be added to `getnetworkinfo`.

+ HelpExampleCli("getaddednodeinfo", "true")
            + HelpExampleCli("getaddednodeinfo", "true \"192.168.0.201\"")
            + HelpExampleRpc("getaddednodeinfo", "true, \"192.168.0.201\"")
        );
    bool fDns = params[0].get_bool();
    list<string> laddedNodes(0);
    if (params.size() == 1)
    {
        LOCK(cs_vAddedNodes);
        BOOST_FOREACH(const std::string& strAddNode, vAddedNodes)
            laddedNodes.push_back(strAddNode);
    }
    else
    {
        string strNode = params[1].get_str();
        LOCK(cs_vAddedNodes);
        BOOST_FOREACH(const std::string& strAddNode, vAddedNodes) {
            if (strAddNode == strNode)
            {
                laddedNodes.push_back(strAddNode);
                break;
            }
        }
        if (laddedNodes.size() == 0)
            throw JSONRPCError(RPC_CLIENT_NODE_NOT_ADDED, "Error: Node has not been added.");
    }
    UniValue ret(UniValue::VARR);
    if (!fDns)
    {
        BOOST_FOREACH (const std::string& strAddNode, laddedNodes) {