web/py3: Fix file upload test
web/py3: Fix file upload test

There were two bugs here; I think one was probably a copy/paste
issue, and the other looks like it may be a Python 3 issue
due to a change the API of the hashing library?  In any case,
this seems to resolve things.

noxrepo/pox,MurphyMc/pox,noxrepo/pox,MurphyMc/pox,MurphyMc/pox,MurphyMc/pox,MurphyMc/pox,noxrepo/pox,noxrepo/pox