In certain builds we pass a list of "interesting" metrics. Everything not on that list is marked as disabled. For tests however we want to keep all defined metrics enabled. We use serverknobs to control that. At build time we build a serverknobs config using all "uninteresting" metrics and enable them. This config would then need to be applied at runtime when in tests. Differential Revision: https://phabricator.services.mozilla.com/D237700