spec: fix module import spec to deal with a non-clean environment

Change-Id: Ic7a92c9532526307d43df947a4096fd1c5d4b9ec
Reviewed-on: https://gerrit.instructure.com/28817
Product-Review: Bracken Mosbacker <bracken@instructure.com>
Reviewed-by: Bracken Mosbacker <bracken@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>