Add spec for turning off needs_grading query
Add spec for turning off needs_grading query

closes KNO-386
flag=none

Test plan
- specs pass

Change-Id: I52691fe9f3c818765db5a2e3290b02949d74b19f
(cherry picked from commit 900a02a7d2c28897e2fe272ce2b579fd5469fcbd)
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/232617
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>
Reviewed-by: Rob Orton <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@instructure.com>
Reviewed-by: Steve Shepherd <e794458448443812fb2685675aab3bbd1a3891bc@instructure.com>
QA-Review: Rob Orton <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@instructure.com>
QA-Review: Steve Shepherd <e794458448443812fb2685675aab3bbd1a3891bc@instructure.com>
Product-Review: Brian Watson <4411c2aac809443ec63e2dd517de0f2dbc7408c6@instructure.com>

sfu/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,sfu/canvas-lms