[storage|aws] Add #each_file method to directory model.
[storage|aws] Add #each_file method to directory model.

The method yields every file in a directory, even taking pagination
into account. The list of files is never fully realized in memory, so
this should be suitable for directories with large numbers of files.

pyama86/fog,TerryHowe/fog,adecarolis/fog,dLobatog/fog,papedaniel/fog,dLobatog/fog,joshmyers/fog,joshisa/fog,brilliomsinterop/fog,pravi/fog,phillbaker/fog,eLobato/fog,b0ric/fog,nalabjp/fog,surminus/fog,runtimerevolution/fog,dustacio/fog,mitchlloyd/fog,MSOpenTech/fog,dhague/fog,joshmyers/fog,b0ric/fog,backupify/fog,pravi/fog,rackspace/fog,NETWAYS/fog,plribeiro3000/fog,unorthodoxgeek/fog,NETWAYS/fog,lwander/fog,rackspace/fog,covario-cdiaz/fog,dpowell7/fog,theforeman/fog,unorthodoxgeek/fog,theforeman/fog,seanhandley/fog,dustacio/fog,12spokes/fog,pyama86/fog,bdunne/fog,b0e/fog,alphagov/fog,nandhanurrevanth/fog,glennpratt/fog,Ladas/fog,nandhanurrevanth/fog,asebastian-r7/fog,bryanl/fog,asebastian-r7/fog,kongslund/fog,phillbaker/fog,dtdream/fog,mohitsethi/fog,eLobato/fog,displague/fog,petems/fog,dhague/fog,glennpratt/fog,cocktail-io/fog,brilliomsinterop/fog,papedaniel/fog,yyuu/fog,mohitsethi/fog,seanhandley/fog,github/fog,TerryHowe/fog,duhast/fog,zephyrean/fog,sferik/fog,brilliomsinterop/fog,nalabjp/fog,fog/fog,runtimerevolution/fog,ack/fog,adecarolis/fog,petems/fog,kongslund/fog,zephyrean/fog,lwander/fog,fog/fog,SpryBTS/fog,brandondunne/fog,zephyrean/fog,yyuu/fog,mavenlink/fog,Programatica/fog,sapcc/fog,bryanl/fog,ManageIQ/fog,martinb3/fog,martinb3/fog,duhast/fog,10io/fog,MSOpenTech/fog,alphagov/fog,github/fog,nandhanurrevanth/fog,sapcc/fog,dtdream/fog,covario-cdiaz/fog,displague/fog,joshisa/fog,mavenlink/fog,10io/fog,Programatica/fog,backupify/fog,Ladas/fog,sideci-sample/sideci-sample-fog,ack/fog,icco/fog,cocktail-io/fog,surminus/fog,sideci-sample/sideci-sample-fog,SpryBTS/fog,plribeiro3000/fog,nicolasbrechet/fog,adamleff/fog,phillbaker/fog,ManageIQ/fog,adamleff/fog,mitchlloyd/fog,nicolasbrechet/fog,icco/fog