test: Make docker-images.setup failure fatal
test: Make docker-images.setup failure fatal

This avoids getting broken images and broken tests when any of the
imports fail for some reason.

Closes #5726
Reviewed-by: Stef Walter <8a7fbf0f15d3ad982af54ef28f5c117d2494b76c@redhat.com>

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