fix jaeger http endpoint

Keep 0.7 for traces index.

clippy

Disable control plane check for searcher. (quickwit-oss#5360)

Reduce delete index concurrency to 5 (quickwit-oss#5346)

* Reduce delete index concurrency to 5

* Deserialize splits outside of tokio runtime

fix the issue, maybe?

add timestamped logs arround lock

Add logs

always call truncate_candidate_list from a consistent state

reserve one thread for incoming requests