[Rackspace] Remove circular requires from Storage
[Rackspace] Remove circular requires from Storage

The fog DSL automatically requires files when `models` and `collections`
have been declared.

When Metadata is required, it attempted to require both file, files,
directory and directories, both trying to require the same.

When fog/fog-core#32 was done, the ordering changed so that directory
was required first and referenced metadata which referenced Directory.

Fixes fog/fog#2825

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