Added flush all command.
Added flush all command.

xleliberty/DoctrineCacheBundle,mente/DoctrineCacheBundle,eXtreme/DoctrineCacheBundle,ivoba/DoctrineCacheBundle,doctrine/DoctrineCacheBundle,eXtreme/DoctrineCacheBundle,xleliberty/DoctrineCacheBundle,mente/DoctrineCacheBundle,nicolas-grekas/DoctrineCacheBundle,nicolas-grekas/DoctrineCacheBundle,yethee/DoctrineCacheBundle,stof/DoctrineCacheBundle,yethee/DoctrineCacheBundle,ivoba/DoctrineCacheBundle,stof/DoctrineCacheBundle