Feature #4217: don't try to delete images from s3 that don't have a source
Feature #4217: don't try to delete images from s3 that don't have a
source

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