common: If 'internal-error' try to get better error from exit status
common: If 'internal-error' try to get better error from exit status

If our CockpitPipe fails with 'internal-error' and it's a process,
try to get a better error by looking at the exit status of the process.
Hopefully that will be more descriptive.

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

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