test: Adjust ostree rollback test to new rpm-ostree behaviour
test: Adjust ostree rollback test to new rpm-ostree behaviour

Previously, when rolling back from base.2 to base.1, base.2 appeared
again as normal available update. Now rpm-ostree flips between the two
with "rollback" and reverses the order.

Both behaviours make sense and got ack'ed by upstream, so expect the new
behaviour for current fedora-atomic.

Also verify that the order is as expected for the old behaviour.

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