test plan
- run the following with group category object and file contents
- GroupAndMembershipImporter.create_import_with_attachment(category, file)
- it should return a progress
- it should import groups and group members
closes VICE-813
flag=none
Change-Id: Iccc7a4f491d7efbe035057a2915f318fd695deb1
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/249030
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>
Reviewed-by: Matthew Lemon <mlemon@instructure.com>
QA-Review: Matthew Lemon <mlemon@instructure.com>
Product-Review: Rob Orton <rob@instructure.com>