bug 4138: do not get ceph disk info in vm poll
bug 4138: do not get ceph disk info in vm poll

Space reported by ceph is the same OpenNebula has for the
full disk. Does not add any extra information.

alvarosimon/one,goberle/one,alvarosimon/one,ohamada/one,abelCoronado93/one,hsanjuan/one,hsanjuan/one,ohamada/one,baby-gnu/one,juanmont/one,OpenNebula/one,OpenNebula/one,atodorov-storpool/one,goberle/one,baby-gnu/one,ohamada/one,juanmont/one,hsanjuan/one,goberle/one,goberle/one,hsanjuan/one,hsanjuan/one,baby-gnu/one,atodorov-storpool/one,abelCoronado93/one,hsanjuan/one,juanmont/one,atodorov-storpool/one,atodorov-storpool/one,alvarosimon/one,baby-gnu/one,unistra/one,hsanjuan/one,ohamada/one,OpenNebula/one,juanmont/one,baby-gnu/one,abelCoronado93/one,baby-gnu/one,abelCoronado93/one,juanmont/one,hsanjuan/one,abelCoronado93/one,baby-gnu/one,abelCoronado93/one,goberle/one,goberle/one,ohamada/one,baby-gnu/one,OpenNebula/one,unistra/one,juanmont/one,unistra/one,goberle/one,unistra/one,OpenNebula/one,atodorov-storpool/one,atodorov-storpool/one,ohamada/one,alvarosimon/one,abelCoronado93/one,juanmont/one,alvarosimon/one,unistra/one,abelCoronado93/one,goberle/one,alvarosimon/one,OpenNebula/one,ohamada/one,OpenNebula/one,atodorov-storpool/one,unistra/one,unistra/one,ohamada/one,alvarosimon/one,OpenNebula/one,atodorov-storpool/one,alvarosimon/one,atodorov-storpool/one,juanmont/one,juanmont/one,OpenNebula/one,unistra/one