[YSQL] postgresql logs contain two formats, confusing log tools

[foucher]

Jira Link: DB-11092

Description

If you look at a postgresql-<datetime>.log file, you will see a mix of log formats:

2024-04-18 18:13:34.026 PDT [29478] LOG:  database system is ready to accept connections
I0418 18:13:52.774502 3820396800 mem_tracker.cc:254] Creating root MemTracker with garbage collection threshold 5242880 bytes

The first line comes from postgresql logging, the second comes from pggate and is in glog format. It would be nice if these were uniform. Perhaps we could standardize the glog format because our other logs, such as for yb-tserver and yb-master, are glog.

Issue Type

kind/enhancement

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