test: Check for unexpected messages on failures as well
test: Check for unexpected messages on failures as well

Unexpected journal messages, such as service errors or crashes, are
often the cause for UI failures. Run the journal message check on test
failures as well, so that we can start writing more precise naughty
patterns.

mvollmer/cockpit,martinpitt/cockpit,martinpitt/cockpit,mvollmer/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,mvollmer/cockpit,martinpitt/cockpit,mvollmer/cockpit,martinpitt/cockpit,cockpit-project/cockpit,mvollmer/cockpit,cockpit-project/cockpit,martinpitt/cockpit,cockpit-project/cockpit