more logs (#649)

## 📝 Summary

More logs for mev boost slot data

## 💡 Motivation and Context

<!--- (Optional) Why is this change required? What problem does it
solve? Remove this section if not applicable. -->

---

## ✅ I have completed the following steps:

* [ ] Run `make lint`
* [ ] Run `make test`
* [ ] Added tests (if applicable)

Author: dvush

crates/rbuilder/src/live_builder/payload_events/mod.rs

@@ -177,6 +177,13 @@ impl MevBoostSlotDataGenerator {
                     continue;
                 };
 
+                info!(
+                    payload_id,
+                    ?slot_data,
+                    ?relays,
+                    "Slot data from relays received"
+                );
+
                 let mut correct_event = event;
                 correct_event
                     .data

crates/rbuilder/src/live_builder/payload_events/relay_epoch_cache.rs

@@ -100,7 +100,7 @@ impl RelaysForSlotData {
             let _span_guard = span.enter();
             let relay_data = match res {
                 Ok(Some(res)) => {
-                    trace!("Got slot data from the relay");
+                    trace!(?res, "Got slot data from the relay");
                     res
                 }
                 Ok(None) => {