test: Ignore journal message when docker restarts
test: Ignore journal message when docker restarts

During the docker restart test, we see a message like the the
following:

    http:///var/run/docker.sock/v1.12/events: received truncated HTTP response

Closes #9312
mvollmer/cockpit,moraleslazaro/cockpit,mareklibra/cockpit,mareklibra/cockpit,deryni/cockpit,mareklibra/cockpit,deryni/cockpit,deryni/cockpit,moraleslazaro/cockpit,deryni/cockpit,garrett/cockpit,garrett/cockpit,stefwalter/cockpit,mvollmer/cockpit,mvollmer/cockpit,andreasn/cockpit,garrett/cockpit,cockpituous/cockpit,cockpituous/cockpit,moraleslazaro/cockpit,SotolitoLabs/cockpit,mvollmer/cockpit,SotolitoLabs/cockpit,moraleslazaro/cockpit,SotolitoLabs/cockpit,martinpitt/cockpit,mareklibra/cockpit,martinpitt/cockpit,SotolitoLabs/cockpit,martinpitt/cockpit,cockpit-project/cockpit,cockpituous/cockpit,cockpituous/cockpit,moraleslazaro/cockpit,stefwalter/cockpit,garrett/cockpit,deryni/cockpit,stefwalter/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,cockpituous/cockpit,andreasn/cockpit,andreasn/cockpit,mareklibra/cockpit,mareklibra/cockpit,cockpit-project/cockpit,deryni/cockpit,andreasn/cockpit,stefwalter/cockpit,garrett/cockpit,SotolitoLabs/cockpit,andreasn/cockpit,cockpit-project/cockpit,deryni/cockpit,stefwalter/cockpit,stefwalter/cockpit,mvollmer/cockpit,martinpitt/cockpit,cockpituous/cockpit,SotolitoLabs/cockpit,andreasn/cockpit,moraleslazaro/cockpit,andreasn/cockpit,mareklibra/cockpit,stefwalter/cockpit,SotolitoLabs/cockpit,moraleslazaro/cockpit,martinpitt/cockpit