[wsgi] Fix https detection - 'HTTPS' is not part of wsgi, it is a CGI variable. The right wsgi variable is 'wsgi.url_scheme' - Force https if url starts with '/https/' (and remove the prefix from the path. Closes #4305985

#!/usr/bin/env python
from cubicweb.cwctl import run
import sys
run(sys.argv[1:])