shell: Fix use of invalid exit_code exception field
shell: Fix use of invalid exit_code exception field

It should be exit_status

Closes #926
Reviewed-by: Marius Vollmer <bb11c6e942c5cc765df5f04da146b3198127a7a3@redhat.com>

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