Add password protected URL mapping for HTTPS service serving probetelemetry.torproject.org on probetelemetry-01@ for raw probe log download

There is raw probelog collection support in logcollector for a while, however, the access to these collected file is limited to direct retrieval from server's file system. In order to make it more convenient to access these files, a direct https based download is being implemented.

Please map https://probetelemetry.torproject.org/download/ to /home/torprobe/.config/torprobe/hashed on probetelemetry-01@ with a password protected download. Alternatively, if file access is permission restricted, forwarding such traffic to http://127.0.0.82:18201/download/ and let logcollector serve these file is also fine(with minor performance penalty). Nonetheless nginx is still responsible for the password protected access permission check. Per user password is preferred.

(A download link should look like https://probetelemetry.torproject.org/download/b5ee21d3f933aa99f4126a77e6ee8136002664443f460d7df7b57239bf110209)