wgMinervaSchemaMainMenuClickTrackingSampleRate is currently set by default in Minerva as 0.5. It should be set as 0
= Acceptance criteria
[] Write a patch for [[ https://gerrit.wikimedia.org/r/#/projects/operations/mediawiki-config,dashboards/default | mediawiki-config ]] to set in production to 0.5 and ask somebody to deploy that patch using the [[ http://wikitech.wikimedia.org/w/index.php?title=Deployments | deployment calendar ]]. During deployment you'll get a great experience of how we deploy config changes in Wikipedia. You will verify your change was successful by using [[ https://wikitech.wikimedia.org/wiki/X-Wikimedia-Debug | X-Wikimedia-Debug ]]. You'll want to check that for 50% of page views, clicking a link in the mobile main menu sends an event (see testing instructions)
[] When patch is merged write a patch for MobileFrontend to set the default to 0 and cleanup the related code (`mw.config.get('wgMinervaSchemaMainMenuClickTrackingSampleRate',0.5)` becomes `mw.config.get('wgMinervaSchemaMainMenuClickTrackingSampleRate')`
== Testing steps
* Open a new tab with mobile site
* Open main menu
* Open one of the many menu links in a new tab
* Verify a beacon event shows in the developer console approx 50% of the time (see screenshot)
{F26321553}