增加断线重连功能，增加国标的流地址。

pansen

2019-03-09 c7d2513c42d56bab8da3ba2ba312326908241874

 QiaoJiaSystem/StructureApp/FaceExtractElement.cpp

@@ -123,6 +123,9 @@
                    strImgUrl = strImgUrlTmp;
//                    strImgUrl.append("/").append(strImgUrlTmp);
                    fdfsClient->rwLock.unlock();
                } else {
                    strImgUrl = "";
                    ERR("fdfsClient is nullptr ???");
                }

                //拼接json