feature #559: preserve custom NIC attributes
feature #559: preserve custom NIC attributes

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