Debian Continuous Integration improvements

Description of the project: Debian Continuous Integration is Debian’s CI platform. It runs tests on the packages published in the Debian archive, and today is used to control migration of packages from unstable, Debian’s development area, to testing, the area of the archive where the next Debian release is being prepared. This makes it a crucial part of Debian’s infrastructure. This project involves implementing incremental improvements to the platform, making it easier to use and to maintain.