Our current build process for our frontend code is based on NPM. The NPM CLI has some limitations that make it consume huge amounts of disk and network for a project our size and needs.
For that reason, we've successfully migrated `master`, `master-private`, `7.2.x` and `7.2.x-private` to Yarn as part of
The goal of this task is to apply the necessary build and code changes so we can migrate `7.1.x` build process as well. This is not a straight backport as many different things need to be tweaked, so we're opting for a specific LPS to keep track of things.