bug #2104: delete unused persistent disk links (cherry picked from commit 13d719a2b391cf8836ae3b264aa51a6819e58a0a)
bug #2104: delete unused persistent disk links
(cherry picked from commit 13d719a2b391cf8836ae3b264aa51a6819e58a0a)

goberle/one,ggalancs/one,OpenNebula/one,abelCoronado93/one,juanmont/one,fasrc/one,cloudweavers/one,cloudweavers/one,abelCoronado93/one,Terradue/one,fasrc/one,goberle/one,alvarosimon/one,unistra/one,cloudweavers/one,unistra/one,abelCoronado93/one,juanmont/one,tuxmea/one,dberzano/opennebula-torino,ggalancs/one,hsanjuan/one,ohamada/one,alvarosimon/one,baby-gnu/one,goberle/one,baby-gnu/one,atodorov-storpool/one,juanmont/one,hsanjuan/one,unistra/one,atodorov-storpool/one,dberzano/opennebula-torino,OpenNebula/one,cloudweavers/one,cloudweavers/one,ggalancs/one,goberle/one,baby-gnu/one,alvarosimon/one,tuxmea/one,spirit03/one,mattthias/one,atodorov-storpool/one,goberle/one,ggalancs/one,baby-gnu/one,juanmont/one,mattthias/one,spirit03/one,mattthias/one,ohamada/one,tuxmea/one,OpenNebula/one,Terradue/one,spirit03/one,cloudweavers/one,baby-gnu/one,fasrc/one,atodorov-storpool/one,abelCoronado93/one,goberle/one,dberzano/opennebula-torino,alvarosimon/one,goberle/one,tuxmea/one,ohamada/one,OpenNebula/one,OpenNebula/one,goberle/one,Terradue/one,hsanjuan/one,alvarosimon/one,Terradue/one,ohamada/one,fasrc/one,spirit03/one,baby-gnu/one,ggalancs/one,dberzano/opennebula-torino,atodorov-storpool/one,atodorov-storpool/one,abelCoronado93/one,spirit03/one,Terradue/one,fasrc/one,dberzano/opennebula-torino,hsanjuan/one,tuxmea/one,hsanjuan/one,abelCoronado93/one,ggalancs/one,mattthias/one,juanmont/one,OpenNebula/one,unistra/one,atodorov-storpool/one,tuxmea/one,spirit03/one,juanmont/one,alvarosimon/one,ggalancs/one,atodorov-storpool/one,dberzano/opennebula-torino,tuxmea/one,cloudweavers/one,mattthias/one,unistra/one,ohamada/one,ohamada/one,abelCoronado93/one,mattthias/one,mattthias/one,Terradue/one,unistra/one,cloudweavers/one,hsanjuan/one,dberzano/opennebula-torino,alvarosimon/one,abelCoronado93/one,OpenNebula/one,mattthias/one,spirit03/one,OpenNebula/one,fasrc/one,Terradue/one,tuxmea/one,spirit03/one,fasrc/one,juanmont/one,ohamada/one,alvarosimon/one,hsanjuan/one,unistra/one,atodorov-storpool/one,ggalancs/one,ohamada/one,unistra/one,juanmont/one,OpenNebula/one,Terradue/one,juanmont/one,baby-gnu/one,hsanjuan/one,baby-gnu/one,fasrc/one