spec: intermittent spec renaming build bug

Change-Id: I61beebc308c12f421dcb17d1c47332e04a14eeb6
Reviewed-on: https://gerrit.instructure.com/29250
Reviewed-by: Shawn Meredith <shawn@instructure.com>
Product-Review: Shawn Meredith <shawn@instructure.com>
QA-Review: Shawn Meredith <shawn@instructure.com>
Tested-by: Shawn Meredith <shawn@instructure.com>