bug #4349: fix bug in qcow2 disk snapshot revert
bug #4349: fix bug in qcow2 disk snapshot revert

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