For the mirror.openshift.com listing some products use "latest" symlink to serve the newest version. We need to add it as well:

• the "latest" folder needs to be displayed in the directory listing
• the request to the latest folder must return valid directory listing with all the files in the latest product version (including connected product versions through master product version)
• the requests to the checksums within the latest directory must be handled properly
• the requests to the actual files within the latest folder need to be handled properly