insert CountsReport errors on the default shard

fixes CNVS-6375

Change-Id: I0771b55ead6fa04d8fa19cfd58addce36758863c
Reviewed-on: https://gerrit.instructure.com/37332
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Cody Cutrer <cody@instructure.com>
Product-Review: Brian Palmer <brianp@instructure.com>
QA-Review: Brian Palmer <brianp@instructure.com>