TransRead: support FTP authentication

So far, we have assumed that user authentication is only relevant for
HTTP(S). But the urllib module used to support HTTP authentication also
supports FTP authentication.

HTTP authentication requires more steps than FTP to work, so let just skip
HTTP-specific steps for FTP authentication.

Signed-off-by: Jérémie Dautheribes <[email protected]>

Author: jeremie-dautheribes

src/bmaptool/TransRead.py

@@ -607,7 +607,7 @@ def _print_warning(timeout):
             except netrc.NetrcParseError as e:
                 _log.error(f"Error parsing line {e.lineno} of {e.filename}: {e.msg}")
 
-        if username and password:
+        if username and password and parsed_url.scheme in ("http", "https"):
             # Unfortunately, in order to handle URLs which contain username
             # and password (e.g., http://user:[email protected]), we need to
             # do few extra things.