Bug #208: HostPool::discover filter outs disabled hosts (cherry picked from commit 0ecd07d8efa3cf39d739d65481046f344b7f4c2c)
Bug #208: HostPool::discover filter outs disabled hosts
(cherry picked from commit 0ecd07d8efa3cf39d739d65481046f344b7f4c2c)

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