test: Report more details about page failure from phantomjs
test: Report more details about page failure from phantomjs

Closes #2027
Reviewed-by: Marius Vollmer <bb11c6e942c5cc765df5f04da146b3198127a7a3@redhat.com>

denysvitali/cockpit,SotolitoLabs/cockpit,vbatts/cockpit,cockpituous/cockpit,andreasn/cockpit,michalskrivanek/cockpit,matobet/cockpit,Scribery/cockpit,dperpeet/cockpit,zigitax/cockpit,denysvitali/cockpit,vbatts/cockpit,cockpit-project/cockpit,harishanand95/cockpit,maxamillion/cockpit,mareklibra/cockpit,xhad/cockpit,cockpit-project/cockpit,dperpeet/cockpit,xhad/cockpit,cockpituous/cockpit,vanloswang/cockpit,petervo/cockpit,sgallagher/cockpit,SotolitoLabs/cockpit,evol262/cockpit,jscotka/cockpit,nmav/cockpit,cockpit-project/cockpit,sgallagher/cockpit,zigitax/cockpit,Scribery/cockpit,moraleslazaro/cockpit,cockpituous/cockpit,maxamillion/cockpit,mareklibra/cockpit,SotolitoLabs/cockpit,jscotka/cockpit,harishanand95/cockpit,FireDrunk/cockpit,deryni/cockpit,jscotka/cockpit,SotolitoLabs/cockpit,evol262/cockpit,larsu/cockpit,nmav/cockpit,mvollmer/cockpit,fridex/cockpit,Armstrong1992/cockpit,mareklibra/cockpit,larsu/cockpit,martinpitt/cockpit,darioajr/cockpit,sgallagher/cockpit,deryni/cockpit,denysvitali/cockpit,sgallagher/cockpit,dperpeet/cockpit,evol262/cockpit,mvollmer/cockpit,stefwalter/cockpit,xhad/cockpit,darioajr/cockpit,andreasn/cockpit,Scribery/cockpit,matobet/cockpit,arilivigni/cockpit,evol262/cockpit,vanloswang/cockpit,andreasn/cockpit,FireDrunk/cockpit,dperpeet/cockpit,nmav/cockpit,firebitsbr/cockpit,zigitax/cockpit,sgallagher/cockpit,nmav/cockpit,larskarlitski/cockpit,nmav/cockpit,martinpitt/cockpit,Armstrong1992/cockpit,dperpeet/cockpit,fridex/cockpit,cockpituous/cockpit,arilivigni/cockpit,netzvieh/cockpit,denysvitali/cockpit,vanloswang/cockpit,garrett/cockpit,larskarlitski/cockpit,vbatts/cockpit,Thermionix/cockpit,martinpitt/cockpit,vbatts/cockpit,vanloswang/cockpit,vbatts/cockpit,netzvieh/cockpit,dperpeet/cockpit,haiyangd/cockpit_view,stefwalter/cockpit,mareklibra/cockpit,arilivigni/cockpit,matobet/cockpit,netzvieh/cockpit,Scribery/cockpit,mvollmer/cockpit,maxamillion/cockpit,Scribery/cockpit,mvollmer/cockpit,deryni/cockpit,Armstrong1992/cockpit,garrett/cockpit,Thermionix/cockpit,SotolitoLabs/cockpit,deryni/cockpit,stefwalter/cockpit,andreasn/cockpit,stefwalter/cockpit,mvollmer/cockpit,moraleslazaro/cockpit,haiyangd/cockpit_view,fridex/cockpit,mareklibra/cockpit,vanloswang/cockpit,moolitayer/cockpit,haiyangd/cockpit_view,firebitsbr/cockpit,harishanand95/cockpit,michalskrivanek/cockpit,netzvieh/cockpit,larsu/cockpit,Thermionix/cockpit,petervo/cockpit,arilivigni/cockpit,arilivigni/cockpit,matobet/cockpit,FireDrunk/cockpit,dperpeet/cockpit,larskarlitski/cockpit,haiyangd/cockpit_view,darioajr/cockpit,denysvitali/cockpit,michalskrivanek/cockpit,michalskrivanek/cockpit,cockpit-project/cockpit,zigitax/cockpit,moraleslazaro/cockpit,petervo/cockpit,michalskrivanek/cockpit,Thermionix/cockpit,moraleslazaro/cockpit,larskarlitski/cockpit,moraleslazaro/cockpit,larskarlitski/cockpit,martinpitt/cockpit,stefwalter/cockpit,harishanand95/cockpit,darioajr/cockpit,petervo/cockpit,sgallagher/cockpit,garrett/cockpit,xhad/cockpit,maxamillion/cockpit,vanloswang/cockpit,Scribery/cockpit,andreasn/cockpit,matobet/cockpit,fridex/cockpit,andreasn/cockpit,moolitayer/cockpit,larsu/cockpit,petervo/cockpit,firebitsbr/cockpit,moolitayer/cockpit,martinpitt/cockpit,cockpit-project/cockpit,firebitsbr/cockpit,maxamillion/cockpit,deryni/cockpit,harishanand95/cockpit,michalskrivanek/cockpit,jscotka/cockpit,sgallagher/cockpit,haiyangd/cockpit_view,michalskrivanek/cockpit,jscotka/cockpit,firebitsbr/cockpit,arilivigni/cockpit,evol262/cockpit,vbatts/cockpit,evol262/cockpit,deryni/cockpit,larskarlitski/cockpit,stefwalter/cockpit,jscotka/cockpit,petervo/cockpit,matobet/cockpit,andreasn/cockpit,netzvieh/cockpit,larsu/cockpit,netzvieh/cockpit,fridex/cockpit,FireDrunk/cockpit,harishanand95/cockpit,zigitax/cockpit,cockpituous/cockpit,mareklibra/cockpit,SotolitoLabs/cockpit,Scribery/cockpit,garrett/cockpit,Armstrong1992/cockpit,fridex/cockpit,harishanand95/cockpit,SotolitoLabs/cockpit,darioajr/cockpit,larsu/cockpit,xhad/cockpit,deryni/cockpit,moolitayer/cockpit,larskarlitski/cockpit,moraleslazaro/cockpit,moolitayer/cockpit,cockpituous/cockpit,garrett/cockpit,Thermionix/cockpit,mareklibra/cockpit,arilivigni/cockpit,Armstrong1992/cockpit,xhad/cockpit,moraleslazaro/cockpit,petervo/cockpit,xhad/cockpit,FireDrunk/cockpit,stefwalter/cockpit,vanloswang/cockpit,Thermionix/cockpit