add SQL tag back to query log lines

test plan:

Run Canvas with this patch applied, verify that the log lines start with
"SQL User Load (ms)" rather than just "User Load (ms)", etc

Change-Id: Ibded65886a61d4ec2c57a37280f0447af005159e
Reviewed-on: https://gerrit.instructure.com/37570
Reviewed-by: Cody Cutrer <cody@instructure.com>
QA-Review: August Thornton <august@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
Product-Review: Brian Palmer <brianp@instructure.com>