Trac #30648: sage --package download is broken

{{{
$ sage --package download cbc
Traceback (most recent call last):
  File "/home/slabbe/GitBox/sage/build/bin/sage-package", line 42, in
<module>
    run()
  File
"/home/slabbe/GitBox/sage/build/bin/../sage_bootstrap/cmdline.py", line
318, in run
    app.download_cls(args.package_name, args.allow_upstream)
TypeError: download_cls() takes exactly 2 arguments (3 given)
}}}

URL: https://trac.sagemath.org/30648
Reported by: slabbe
Ticket author(s): Sébastien Labbé
Reviewer(s): Matthias Koeppe

build/sage_bootstrap/cmdline.py

@@ -315,7 +315,7 @@ def run():
         else:
             app.update_latest(args.package_name)
     elif args.subcommand == 'download':
-        app.download_cls(args.package_name, args.allow_upstream)
+        app.download(args.package_name, args.allow_upstream)
     elif args.subcommand == 'create':
         app.create(args.package_name, args.version, args.tarball, args.type, args.url)
     elif args.subcommand == 'upload':