Fix up the twoway_assign function, which also was broken for multihomed nodes, picking the wrong set of edges cause it was not looking at the name of the link, just the name of the node.
Fix up the twoway_assign function, which also was broken for
multihomed nodes, picking the wrong set of edges cause it was not
looking at the name of the link, just the name of the node.

Also allow routing test when the routing type is ospf.

nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome