Integrate ci-kdl in the building process and launch process.

Integrate ci-kdl in the building process and launch process.

Modify the build process for the images to include the build to have ci-kdl
available in the Mesa jobs. Modify also the init-stage2 to launch in the
background the process that will collect data and store a json file with the
relative changes on the recorded data.

Signed-off-by: Sergi Blanch Torne <sergi.blanch.torne@collabora.com>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24177>