In https://gitlab.com/gitlab-org/gitlab/-/merge_requests/51391 we added
tracking for include:template. Unfortunately, YAML-less Auto DevOps also
uses include:template for Auto-DevOps.gitab-ci.yml, making it currently
impossible to differentiate .gitlab-ci.yml template usage from implicit
usage in our numbers.

This changes it so that pipelines from the auto_devops_source config
source (i.e. YAML-free Auto DevOps pipelines) are counted separately.