M #-: fix bug in onedb purge done (#3755)
M #-: fix bug in onedb purge done (#3755)

Fix bug when there are no consecutive VMs, so the get_page function didn't return the pool.
atodorov-storpool/one,OpenNebula/one,baby-gnu/one,atodorov-storpool/one,OpenNebula/one,OpenNebula/one,baby-gnu/one,OpenNebula/one,OpenNebula/one,baby-gnu/one,baby-gnu/one,OpenNebula/one,atodorov-storpool/one,atodorov-storpool/one,atodorov-storpool/one,baby-gnu/one,atodorov-storpool/one,atodorov-storpool/one,OpenNebula/one,OpenNebula/one,atodorov-storpool/one,OpenNebula/one,baby-gnu/one,baby-gnu/one,atodorov-storpool/one,baby-gnu/one