Product Image download.

Ticket 71003: 4.3. RETRIEVE IMAGES AND DOCUMENTS FROM MARKET PLACE


some times some URLs are not downloading properly. following helps to download some 
so, Add "user-agent" to the http headers:

https://www.arclab.com/en/kb/csharp/download-file-from-internet-to-string-or-file.html

WebClient wc = new WebClient();
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;


issue