test: Fix TestNetworking.testNoService for images with udev ifnames
test: Fix TestNetworking.testNoService for images with udev ifnames

continuous-atomic doesn't have udev's ifnames disabled, thus the
ethernet interfaces are ens1{4,5} there. For this test we don't need to
know their exact names, just that the expected physical interfaces are
shown or not, so allow both cases.

Closes #9448

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