monitoring: resolve metric labeling TODOs (!6757) · Merge requests · Administrator / sourcegraph · GitLab

Administrator requested to merge metrics_labeling_todos into master Nov 21, 2019

Created by: uwedeportivo

Resolves TODOs left over from https://github.com/sourcegraph/sourcegraph/pull/6586

Fixes https://github.com/sourcegraph/sourcegraph/issues/6618