Host解析应使用getAllByName以获取所有域名解析结果

[chenzuyibao]

目前域名解析，将只读取host解析结果的第一个IP

nebula-java/client/src/main/java/com/vesoft/nebula/client/graph/net/NebulaPool.java

Line 40 in f6b10ff

String ip = InetAddress.getByName(addr.getHost()).getHostAddress();

    public static InetAddress getByName(String host)
        throws UnknownHostException {
        return InetAddress.getAllByName(host)[0];
    }

解决方式，使用getAllByName

    InetAddress[] inetAddresses = InetAddress.getAllByName(addr.getHost());
    for (InetAddress inetAddress : inetAddresses) {
        String ip = inetAddress.getHostAddress();
        newAddrs.add(new HostAddress(ip, addr.getPort()));
    }

[wey-gu]

cc @Nicole00

[Nicole00]

good issue, we should consider the multiple ip for the given host. Looking forward your pr to support the all InetAddresses 😁@chenzuyibao