pass filename to eval

so stacktraces stay sane

Change-Id: I7735de50280d513d5c2e94a3b06788c9261a2960
Reviewed-on: https://gerrit.instructure.com/40785
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Simon Williams <simon@instructure.com>
Reviewed-by: Brian Palmer <brianp@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>