TS-938 - Don't merge

Adding the config and a gen_server to handle the c* nodes. But this uses elysium 0.1.7 so the files changed are really misleading.

Also the query seems to work, but it is not currently being used.
what is the advantage run update_nodes() in a spawned process? Isn't it much simpler run inside this gen_server itself. I'd rather it blocks here before doing anything if it could not getting new nodes.