Display IPs of machines when node names conflict to ease troubleshooting
Display IPs of machines when node names conflict to ease troubleshooting

When there is an node name conflicts, such messages are displayed within Consul:

`consul.fsm: EnsureRegistration failed: failed inserting node: Error while renaming Node ID: "e1d456bc-f72d-98e5-ebb3-26ae80d785cf": Node name node001 is reserved by node 05f10209-1b9c-b90c-e3e2-059e64556d4a with name node001`

While it is easy to find the node that has reserved the name, it is hard to find
the node trying to aquire the name since it is not registered, because it
is not part of `consul members` output

This PR will display the IP of the offender and solve far more easily those issues.
scalp42/consul,hashicorp/consul,kingland/consul,42wim/consul,kingland/consul,hashicorp/consul,42wim/consul,hashicorp/consul,42wim/consul,scalp42/consul,scalp42/consul,kingland/consul,42wim/consul,kingland/consul,hashicorp/consul,kingland/consul,scalp42/consul,scalp42/consul,42wim/consul