test: Fake "online" status for PackageKit tests
test: Fake "online" status for PackageKit tests

Our test images are now deliberately "offline", i. e. don't have a
default route. This makes older PackageKit versions refuse to operate
("Cannot refresh cache whilst offline").

It's hard to fake NetworkManager's "is online" state, so disable it and
let PackageKit fall back to the "unix" network stack; add a bogus
default route to coerce it into being "online".

petervo/cockpit,deryni/cockpit,moraleslazaro/cockpit,martinpitt/cockpit,deryni/cockpit,michalskrivanek/cockpit,andreasn/cockpit,garrett/cockpit,mareklibra/cockpit,andreasn/cockpit,andreasn/cockpit,deryni/cockpit,andreasn/cockpit,andreasn/cockpit,garrett/cockpit,andreasn/cockpit,stefwalter/cockpit,cockpituous/cockpit,stefwalter/cockpit,martinpitt/cockpit,andreasn/cockpit,xhad/cockpit,cockpit-project/cockpit,SotolitoLabs/cockpit,xhad/cockpit,moraleslazaro/cockpit,harishanand95/cockpit,harishanand95/cockpit,petervo/cockpit,cockpituous/cockpit,Scribery/cockpit,larskarlitski/cockpit,larsu/cockpit,SotolitoLabs/cockpit,larskarlitski/cockpit,petervo/cockpit,petervo/cockpit,larsu/cockpit,mvollmer/cockpit,SotolitoLabs/cockpit,xhad/cockpit,harishanand95/cockpit,larskarlitski/cockpit,michalskrivanek/cockpit,cockpituous/cockpit,xhad/cockpit,moraleslazaro/cockpit,martinpitt/cockpit,cockpituous/cockpit,harishanand95/cockpit,mareklibra/cockpit,martinpitt/cockpit,martinpitt/cockpit,deryni/cockpit,xhad/cockpit,Scribery/cockpit,larskarlitski/cockpit,petervo/cockpit,michalskrivanek/cockpit,mareklibra/cockpit,michalskrivanek/cockpit,cockpit-project/cockpit,harishanand95/cockpit,deryni/cockpit,mvollmer/cockpit,stefwalter/cockpit,michalskrivanek/cockpit,cockpit-project/cockpit,larsu/cockpit,mvollmer/cockpit,Scribery/cockpit,moraleslazaro/cockpit,moraleslazaro/cockpit,stefwalter/cockpit,larskarlitski/cockpit,stefwalter/cockpit,SotolitoLabs/cockpit,harishanand95/cockpit,Scribery/cockpit,michalskrivanek/cockpit,cockpituous/cockpit,xhad/cockpit,cockpit-project/cockpit,mareklibra/cockpit,petervo/cockpit,cockpit-project/cockpit,deryni/cockpit,SotolitoLabs/cockpit,stefwalter/cockpit,mareklibra/cockpit,larsu/cockpit,garrett/cockpit,moraleslazaro/cockpit,garrett/cockpit,deryni/cockpit,garrett/cockpit,SotolitoLabs/cockpit,mareklibra/cockpit,mvollmer/cockpit,larskarlitski/cockpit,moraleslazaro/cockpit,xhad/cockpit,larsu/cockpit,larskarlitski/cockpit,michalskrivanek/cockpit,SotolitoLabs/cockpit,petervo/cockpit,cockpituous/cockpit,mareklibra/cockpit,stefwalter/cockpit,harishanand95/cockpit,mvollmer/cockpit,Scribery/cockpit,larsu/cockpit,Scribery/cockpit,Scribery/cockpit