Move azure devops tools images under standard images directory
What does this MR do?
Move azure devops tools images under standard images directory, so they can be handled in a consistent way by CI/build pipelines.
All images are referred to by https://about.gitlab.com/devops-tools/azure_devops/breakdown.html
Also fixes the first image on the page, which was already broken in production.
Related issues
Relates #8302 (closed)