Use consistent behavior between pubm:log and pub:log/dcc:log

Summary:
Sure, pubm:log has already identified the component and the entry,
but this is not a valid reason to violate SRP and make this hard
to maintain.

An hint it's a bad idea? former code used $emitter, which isn't defined.

Test Plan: Tested all day on #nasqueron-ops

Reviewers: dereckson

Reviewed By: dereckson

Differential Revision: https://devcentral.nasqueron.org/D1389