test: Use OS specific names for virt-install builder VM
test: Use OS specific names for virt-install builder VM

This allows us to build multiple operating systems at the same
time using virt-install.

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