修复HTTPClient超时不反回问题，并提供设置超时时间接口

sysmodule/httpclientmodule/httpclientpoolmodule.go

@@ -64,9 +64,14 @@ func (slf *HttpClientModule) Init(maxpool int, proxyUrl string) {
 			Proxy:               proxyfun,
 			TLSClientConfig:     &tls.Config{InsecureSkipVerify: true},
 		},
+		Timeout:   5 * time.Second,
 	}
 }
 
+func (slf *HttpClientModule) SetTimeOut(value time.Duration) {
+	slf.client.Timeout = value
+}
+
 func (slf *HttpClientModule) SyncRequest(method string, url string, body []byte, header http.Header) SyncHttpRespone {
 	ret := SyncHttpRespone{
 		resp: make(chan HttpRespone, 1),