Address review comments
Address review comments

(refs #9951)

permcody/moose,bwspenc/moose,nuclear-wizard/moose,harterj/moose,harterj/moose,lindsayad/moose,permcody/moose,SudiptaBiswas/moose,sapitts/moose,bwspenc/moose,sapitts/moose,lindsayad/moose,YaqiWang/moose,nuclear-wizard/moose,permcody/moose,dschwen/moose,dschwen/moose,yipenggao/moose,sapitts/moose,sapitts/moose,andrsd/moose,lindsayad/moose,SudiptaBiswas/moose,permcody/moose,harterj/moose,bwspenc/moose,SudiptaBiswas/moose,YaqiWang/moose,idaholab/moose,laagesen/moose,andrsd/moose,milljm/moose,Chuban/moose,nuclear-wizard/moose,nuclear-wizard/moose,andrsd/moose,milljm/moose,Chuban/moose,friedmud/moose,dschwen/moose,sapitts/moose,SudiptaBiswas/moose,harterj/moose,jessecarterMOOSE/moose,idaholab/moose,friedmud/moose,yipenggao/moose,lindsayad/moose,milljm/moose,yipenggao/moose,friedmud/moose,jessecarterMOOSE/moose,bwspenc/moose,andrsd/moose,jessecarterMOOSE/moose,idaholab/moose,lindsayad/moose,laagesen/moose,jessecarterMOOSE/moose,laagesen/moose,Chuban/moose,idaholab/moose,jessecarterMOOSE/moose,milljm/moose,dschwen/moose,harterj/moose,laagesen/moose,milljm/moose,friedmud/moose,SudiptaBiswas/moose,YaqiWang/moose,dschwen/moose,yipenggao/moose,laagesen/moose,bwspenc/moose,Chuban/moose,andrsd/moose,idaholab/moose,YaqiWang/moose