added list_issue_attached_files.rb
added list_issue_attached_files.rb

github/platform-samples,github/platform-samples,clsOrg/platform-samples,clsOrg/platform-samples,github/platform-samples,github/platform-samples,clsOrg/platform-samples,clsOrg/platform-samples,github/platform-samples,github/platform-samples,clsOrg/platform-samples,github/platform-samples,github/platform-samples,clsOrg/platform-samples