Revert "fix tm/qcow2/ln fix clean before attach (#124)"
Revert "fix tm/qcow2/ln fix clean before attach (#124)"

This reverts commit e99352f5d94043198087a8be6a48421221e5cf5c.

juanmont/one,juanmont/one,baby-gnu/one,ohamada/one,OpenNebula/one,atodorov-storpool/one,goberle/one,baby-gnu/one,unistra/one,juanmont/one,juanmont/one,ohamada/one,abelCoronado93/one,OpenNebula/one,OpenNebula/one,baby-gnu/one,goberle/one,baby-gnu/one,ohamada/one,baby-gnu/one,unistra/one,ohamada/one,atodorov-storpool/one,unistra/one,unistra/one,juanmont/one,goberle/one,abelCoronado93/one,abelCoronado93/one,unistra/one,OpenNebula/one,unistra/one,atodorov-storpool/one,unistra/one,juanmont/one,OpenNebula/one,ohamada/one,juanmont/one,goberle/one,atodorov-storpool/one,abelCoronado93/one,unistra/one,ohamada/one,goberle/one,baby-gnu/one,OpenNebula/one,goberle/one,abelCoronado93/one,juanmont/one,atodorov-storpool/one,atodorov-storpool/one,atodorov-storpool/one,abelCoronado93/one,atodorov-storpool/one,OpenNebula/one,atodorov-storpool/one,abelCoronado93/one,baby-gnu/one,goberle/one,juanmont/one,abelCoronado93/one,baby-gnu/one,OpenNebula/one,ohamada/one,goberle/one,OpenNebula/one,ohamada/one