No way to generate a node ticket from the CLI

[b5]

Now that we have dns, these are more useful.

[dignifiedquire]

Now that we have dns, these are more useful.

how so? you really don't need node tickets, just use the node id, now that we have dns discovery

[cameronfyfe]

I asked because I was running iroh-gateway and it wanted --default-node to be a ticket, not a node id. I resolved my issue by adding node id support to iroh-gateway (n0-computer/iroh-examples#48) so don't need to export node tickets for that purpose anymore. Though maybe it'd still be useful for people to be able to print their node ticket in some cases?