ci, valve: Add the dEQP runners for Valve CI

ci, valve: Add the dEQP runners for Valve CI

v2.

  - Build the runner image as part of the CI for the boot2container
  project, rather than as a manually step using the build instructions
  in valve-trigger.dockerfile.

  - Depend on a non-default kernel build hosted in the valve-infra
  package repository. This does reduce the current caching feature of
  local artifacts, but makes it easier to chop and change kernels on a
  per-project or even per-test basis.

v3.

  - Depend on a kernel built and stored in the valve-infra generic
  package repo.

  - Build the runner container using ci-templates as part of the CI in
  valve-infra.

  - Now that the runner container is built in the valve-infra CI, I
  dropped the source import of client.py and message.py. They are
  built in the runner container.

Acked-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Martin Roukala <martin.roukala@mupuf.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14660>