Return node_uuid from a port-show cmd

A port-show command returned these fields: address, created_at, extra,
updated_at, and uuid. The node_uuid associated with the port is also
returned with this change.

Change-Id: If345406d5a00bed7e5acfaa6e710f3cdb39b07ac
Closes-Bug: #1279552
Merge "Return node_uuid from a port-show cmd"