Get a dictionary of addresses.

def address_info(self):
        """Get a dictionary of addresses."""
        return {
            "node_ip_address": self._node_ip_address,
            "redis_address": self._redis_address,
            "object_store_address": self._plasma_store_socket_name,
            "raylet_socket_name": self._raylet_socket_name,
            "webui_url": self._webui_url,
        }