DBO_add_node_set(): adapt to dict return type
DBO_add_node_set(): adapt to dict return type

shlomif/rhizi,yuvadm/rhizi,ozFri/rhizi,yuvadm/rhizi,Rhizi/rhizi,cben/rhizi,Rhizi/rhizi,tlevine/rhizi,Rhizi/rhizi,shlomif/rhizi,shlomif/rhizi,shlomif/rhizi,tlevine/rhizi,tlevine/rhizi,ozFri/rhizi,cben/rhizi,cben/rhizi,ozFri/rhizi,yuvadm/rhizi,Rhizi/rhizi,tlevine/rhizi,yuvadm/rhizi,cben/rhizi,ozFri/rhizi