Swapping out private-go-kademlia to private-libdht

[dettanym]

• zikade uses triert from golibdht repo.
• I've made private-zikade use our NormalizedRT class from private-go-kademlia for some but not all uses of triert. In doing that, I've changed dht.go, config.go, probe.go in the private-go-kademlia repo.
• Also, I've pointed private-zikade to our private-golibdht repo for the triert class (it's identical to the one in golibdht).
  private-go-kademlia also imports triert in the files other than the three mentioned above. So a full port will require including NormalizedRT class instead of triert for all instances.
• Once work is done in the private-go-kademlia repo, just port over the normalizer.go, table.go, table_test.go to private-libdht. Change the files that are still using triert and are necessary for testing / eval to use normalizedRT instead