bug #2480: Use default values for enforce and ds_id if nil
bug #2480: Use default values for enforce and ds_id if nil

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