David Fernandez authored Mar 30, 2021 and Heinrich Lee Yu committed Mar 30, 2021

1. Update `Packages::Package.for_projects` to not eager load projects
2. Update `Packages::Maven::PackageFinder` to use the minimum role
needed to access packages
3. Update `Packages::Maven::PackageFinder` to access the
`packages_packages` table only once instead of three times.