common中的http连接池初始化逻辑有问题，PoolingHttpClientConnectionManager反复初始化

[Aron1995]

common中的http连接池初始化逻辑有问题，日志中持续输出（Initialize the PoolingHttpClientConnectionManager -- maxTotal:100, defaultMaxPerRoute:50）

以下条件在代码中不成立，导致反复初始化：
`public CloseableHttpClient getHttpClient() {
if (null != httpClient) {
return httpClient;
}
if (null == configStorage) {
return httpClient = HttpClients.createDefault();
}

    CloseableHttpClient httpClient = HttpClients
            .custom()
            //网络提供者
            .setDefaultCredentialsProvider(createCredentialsProvider(configStorage))
            .setConnectionManager(connectionManager(configStorage))
            //设置httpclient的SSLSocketFactory
            .setSSLSocketFactory(createSSL(configStorage))
            .setDefaultRequestConfig(createRequestConfig(configStorage))
            .build();
    if (null == connectionManager) {
        return this.httpClient = httpClient;
    }

    return httpClient;

}`

对connectionManager判断为null才更新client并返回的逻辑请确认是否存在问题