Make peacock tests pass on linux
Make peacock tests pass on linux

refs #11734

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