fixed bug in image persistent method
fixed bug in image persistent method

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