openflow.nicira: Update some comments
openflow.nicira: Update some comments

pthien92/sdn,MurphyMc/pox,MurphyMc/pox,MurphyMc/pox,noxrepo/pox,pthien92/sdn,MurphyMc/pox,pthien92/sdn,noxrepo/pox,noxrepo/pox,pthien92/sdn,MurphyMc/pox,pthien92/sdn,noxrepo/pox