Fixes an issue where the submission that was being checked for never
existed (student2 was created in the previous revision of the spec, but
never used to set up a quiz submission). The change also change's the
students' submission's "updated_at" property so the CSV should have
the same row order every time.
test plan: specs pass.
Change-Id: I97584bf3a7980108f8608dfe891befe0dfdc4a6f
Reviewed-on: https://gerrit.instructure.com/20520
Reviewed-by: Brian Palmer <brianp@instructure.com>
Tested-by: Cody Cutrer <cody@instructure.com>
Product-Review: Brian Palmer <brianp@instructure.com>
QA-Review: Brian Palmer <brianp@instructure.com>
456bd11874