This commit renames the mock structs by appending Old in their names. In
doing so the old tests stay unchanged and new mock structs can be added
in the following commit.
The routing package implements authentication+validation of channel
announcements, pruning of the channel graph, path finding within the network,
sending outgoing payments into the network and synchronizing new peers to our
channel graph state.
Installation and Updating
⛰ go get -u github.com/lightningnetwork/lnd/routing