Make use of lavacp-seattle-01
Switch from the azrael worker to a gitlab-runner on lavacp-seattle-01
This is particularly important for any pipeline operation which requires a large upload, so DIND.
azrael can still be used, if desired, to help with parallelisation. e.g. lava-server aarch64 unit tests could run on lavacp-seattle-01 but lava-dispatcher on azrael.codehelp because lava-dispatcher unit tests parallelise better and both could run at the same time. (The seattle has fewer cores but each core is faster.)
See also ci-images#15