annotate COPY TO STDOUT queries with marginalia if configured
annotate COPY TO STDOUT queries with marginalia if configured

closes CORE-1027

test plan:
 * configure marginalia.yml
 * in consule, run Account.active.find_each {}
 * observer the COPY query, with a marginalia comment

Change-Id: I7708e641e699e52637a800e1d3f25d9b26d94a7a
Reviewed-on: https://gerrit.instructure.com/141636
Tested-by: Jenkins
Reviewed-by: Rob Orton <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@instructure.com>
Product-Review: Rob Orton <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@instructure.com>
QA-Review: Rob Orton <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@instructure.com>

sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,djbender/canvas-lms