feature #3327: make vcenter recursive search compatible with ruby 1.8.7
feature #3327: make vcenter recursive search compatible with ruby 1.8.7

(cherry picked from commit a093e08780b98a5b8728fb37ffd21ef09aefe91a)

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