allow a list of regions, as well as negating the option
Change-Id: Ic306c1999854f94bdfd8a9257735eb16525ed6f3
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/240535
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>
Reviewed-by: Ethan Vizitei <evizitei@instructure.com>
QA-Review: Ethan Vizitei <evizitei@instructure.com>
Product-Review: Ethan Vizitei <evizitei@instructure.com>