Added _problem.finalizeMultiApps()
Added _problem.finalizeMultiApps()

Just make it consisent with Steady

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