By default, the Consul agent listens on the local interface
at port 8500 for API requests. This change makes the API examples
using `curl` copy-pasteable for this default configuration.
This patch adds a /v1/coordinate/node/:node endpoint to get the network
coordinates for a single node in the network.
Since Consul Enterprise supports network segments it is still possible
to receive mutiple entries for a single node - one per segment.