test: Don't setup epel when skipping repos in rhel-7.setup
test: Don't setup epel when skipping repos in rhel-7.setup

All the other repos already aren't installed.
This flag is used when the packages are provided from other/custom sources.

Closes #3679
Reviewed-by: Dominik Perpeet <f7830b2723a5db4fc185058b06cfab4b89a38da9@redhat.com>

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