spec: re-fix base_transactions for onceler

Change-Id: I22ea36859637e6081d79b5c3f1ec064a778635ca
Reviewed-on: https://gerrit.instructure.com/38028
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Cody Cutrer <cody@instructure.com>
Product-Review: James Williams  <jamesw@instructure.com>
QA-Review: James Williams  <jamesw@instructure.com>