bots: Disable tuned on Debian/Ubuntu images
bots: Disable tuned on Debian/Ubuntu images

tuned.service runs by default, which breaks booting nested QEMU images
(https://launchpad.net/bugs/1774000).

martinpitt/cockpit,deryni/cockpit,cockpit-project/cockpit,andreasn/cockpit,SotolitoLabs/cockpit,mvollmer/cockpit,andreasn/cockpit,moraleslazaro/cockpit,cockpituous/cockpit,moraleslazaro/cockpit,garrett/cockpit,andreasn/cockpit,mvollmer/cockpit,cockpit-project/cockpit,martinpitt/cockpit,martinpitt/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,mareklibra/cockpit,garrett/cockpit,moraleslazaro/cockpit,mareklibra/cockpit,moraleslazaro/cockpit,SotolitoLabs/cockpit,stefwalter/cockpit,mvollmer/cockpit,garrett/cockpit,andreasn/cockpit,moraleslazaro/cockpit,deryni/cockpit,garrett/cockpit,stefwalter/cockpit,stefwalter/cockpit,mareklibra/cockpit,cockpituous/cockpit,mareklibra/cockpit,SotolitoLabs/cockpit,SotolitoLabs/cockpit,deryni/cockpit,cockpituous/cockpit,stefwalter/cockpit,cockpituous/cockpit,mvollmer/cockpit,moraleslazaro/cockpit,mvollmer/cockpit,deryni/cockpit,deryni/cockpit,stefwalter/cockpit,stefwalter/cockpit,cockpituous/cockpit,deryni/cockpit,andreasn/cockpit,andreasn/cockpit,martinpitt/cockpit,martinpitt/cockpit,andreasn/cockpit,SotolitoLabs/cockpit,moraleslazaro/cockpit,mareklibra/cockpit,mareklibra/cockpit,stefwalter/cockpit,SotolitoLabs/cockpit,SotolitoLabs/cockpit,cockpit-project/cockpit,garrett/cockpit,cockpituous/cockpit,deryni/cockpit,mareklibra/cockpit