manifest updated with new interfaces in the nodes section.

What you cannot do, is change the endpoint of an existing link. For
example, if link0 goes from A to B, you cannot submit an rspec that
changes link0 to go from A to C. What you *can* do is submit an rspec
that removes link0 and adds link1 from A to C. This was not working
before, for a number of reasons having to do with the manifest
generation, but those are all fixed now.