Captive core logs are missing information and have the wrong log level

[MonsieurNicolas]

What version are you using?

Horizon 2.5

What did you do?

Start captive core in debug level.

What did you expect to see?

Log lines with information on subsystem and log level.

What did you see instead?

Log lines all claim to be INFO level and core's subsystem is missing (truncated).

compare one of the DEBUG Overlay log lines for example (raw core logs first, captive-core logs per Horizon):

2021-06-15T07:49:03.625 GA2QO [Overlay DEBUG] TCPPeer::startRead 800 from 3.83.213.217:11625
-------------------------
INFO[2021-06-15T16:06:20.901+02:00] TCPPeer::startRead 728 from 54.211.227.163:11625  pid=63159 service=ingest subservice=stellar-core

note the missing DEBUG and Overlay anywhere - this makes debugging very hard.