log error reports for each failed shard in multi-shard periodic jobs

Change-Id: I37cd3987256dd2ffb0a996c88774c1cd71ce3c55
Reviewed-on: https://gerrit.instructure.com/30692
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: James Williams  <jamesw@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>