data.filename was not being populated, so the filename field
of the multipart request was empty, causing rack to just throw
it away. NOTE: rack throws away fields if you provide filename=""
with content-disposition file.
fixes#5154
Change-Id: If6f0a3a818aaa2f97ee4aded4bea80063209b12a
Reviewed-on: https://gerrit.instructure.com/4840
Tested-by: Hudson <hudson@instructure.com>
Tested-by: Selenium <selenium@instructure.com>
Reviewed-by: Brian Palmer <brianp@instructure.com>
JT Olds