Implement full DHT census

[pipermerriam]

What is wrong

We need glados-cartographer to perform full census walking of the network.

How was it fixed.

The glados-cartographer process now performs a full census of the network every 15 minutes. We still aren't saving them to the database (for example we should be recording the data_radius)... but this is a start.

[pipermerriam]

This implements the basic functionality, blocked by having a basic system for recording client version string info, and then having a db model for saving census info.

[pipermerriam]

I've got an issue that I'm really not sure how to correctly fix.

error[E0597]: `limiter` does not live long enough
   --> glados-cartographer/src/lib.rs:289:22
    |
289 |         let permit = limiter.acquire().await.expect("Error acquiring lock");
    |                      ^^^^^^^^^^^^^^^^^ borrowed value does not live long enough
290 |         tokio::spawn(do_liveliness_check(enr, tx.clone(), census.clone(), config.clone(), conn.clone(), permit));
    |                      ------------------------------------------------------------------------------------------ argument requires that `limiter` is borrowed for `'static`
291 |     }
292 | }
    | - `limiter` dropped here while still borrowed

error[E0597]: `limiter` does not live long enough
   --> glados-cartographer/src/lib.rs:349:22
    |
349 |         let permit = limiter.acquire().await.expect("Error acquiring lock");
    |                      ^^^^^^^^^^^^^^^^^ borrowed value does not live long enough
350 |         tokio::spawn(do_routing_table_enumeration(enr, tx.clone(), census.clone(), config.clone(), permit));
    |                      ------------------------------------------------------------------------------------- argument requires that `limiter` is borrowed for `'static`
351 |     }
352 | }
    | - `limiter` dropped here while still borrowed

For more information about this error, try `rustc --explain E0597`.

I understand the error, but I don't understand how to fix it. It seems I need to maybe do something with the lifetime of the limiter object, but that's about as far as I've been able to figure out.

[perama-v]

Could you push the changes where this error is occurring?

[pipermerriam]

I ended up fixing it this morning. Bad commit hygene on my side and don't really have any easy way to expose the history correctly without dumb git futzing....

[pipermerriam]

replaced by #117