NLSR

Currently NLSR models neighbors as an Adjacent object that maintain a string to represent the FaceUri that connects to them through NFD. This lightweight implementation is okay, but it means that when dealing with information from NFD, the strings have to be canonized into FaceUri objects because NFD only deals in those.

NLSR should store the Face URIs as a FaceUri object and canonize them when the configuration file is loaded. This also provides some guarding against user misconfiguration if they are required to provide the protocol and port in canonical form.