Very frequent log spam in postgresql when having livequeries is on
### Summary

Very frequent log spam from postgresql when `live: true`. Many lines on each 250ms reeplication poll.

Seems to be some debug thing, and I guess this is user error, but I haven't changed any defaults before getting this problem (and a 100% full disk).

```
2021-03-28 06:46:07.990 CEST [323499] roiheimen@roiheimen LOG:  logical decoding found consistent point at 0/1AB56970
2021-03-28 06:46:07.990 CEST [323499] roiheimen@roiheimen DETAIL:  There are no running transactions.
2021-03-28 06:46:07.990 CEST [323499] roiheimen@roiheimen STATEMENT:  SELECT lsn, data FROM pg_catalog.pg_logical_slot_get_changes($1, $2, $3, 'add-tables', $4::text)
2021-03-28 06:46:07.990 CEST [323509] roiheimen@roiheimen LOG:  logical decoding found consistent point at 0/1AB56970
2021-03-28 06:46:07.990 CEST [323509] roiheimen@roiheimen DETAIL:  There are no running transactions.
2021-03-28 06:46:07.990 CEST [323509] roiheimen@roiheimen STATEMENT:  SELECT lsn, data FROM pg_catalog.pg_logical_slot_get_changes($1, $2, $3, 'add-tables', $4::text)
2021-03-28 06:46:07.990 CEST [323516] roiheimen@roiheimen LOG:  logical decoding found consistent point at 0/1AB56970
2021-03-28 06:46:07.990 CEST [323516] roiheimen@roiheimen DETAIL:  There are no running transactions.
2021-03-28 06:46:07.990 CEST [323516] roiheimen@roiheimen STATEMENT:  SELECT lsn, data FROM pg_catalog.pg_logical_slot_get_changes($1, $2, $3, 'add-tables', $4::text)
2021-03-28 06:46:07.990 CEST [323503] roiheimen@roiheimen LOG:  logical decoding found consistent point at 0/1AB56970
2021-03-28 06:46:07.990 CEST [323503] roiheimen@roiheimen DETAIL:  There are no running transactions.
2021-03-28 06:46:07.990 CEST [323503] roiheimen@roiheimen STATEMENT:  SELECT lsn, data FROM pg_catalog.pg_logical_slot_get_changes($1, $2, $3, 'add-tables', $4::text)
2021-03-28 06:46:07.990 CEST [323517] roiheimen@roiheimen LOG:  starting logical decoding for slot "jygbpqjmsnvolakjyzmewdkuhajsbo"
2021-03-28 06:46:07.990 CEST [323517] roiheimen@roiheimen DETAIL:  Streaming transactions committing after 0/1AB569A8, reading WAL from 0/1AB56970.
2021-03-28 06:46:07.990 CEST [323517] roiheimen@roiheimen STATEMENT:  SELECT lsn, data FROM pg_catalog.pg_logical_slot_get_changes($1, $2, $3, 'add-tables', $4::text)
2021-03-28 06:46:07.990 CEST [323517] roiheimen@roiheimen LOG:  logical decoding found consistent point at 0/1AB56970
2021-03-28 06:46:07.990 CEST [323517] roiheimen@roiheimen DETAIL:  There are no running transactions.
2021-03-28 06:46:07.990 CEST [323517] roiheimen@roiheimen STATEMENT:  SELECT lsn, data FROM pg_catalog.pg_logical_slot_get_changes($1, $2, $3, 'add-tables', $4::text)
2021-03-28 06:46:08.150 CEST [323506] roiheimen@roiheimen LOG:  starting logical decoding for slot "vrblvdoezbgiwnebpklxltfwvngmee"
2021-03-28 06:46:08.150 CEST [323506] roiheimen@roiheimen DETAIL:  Streaming transactions committing after 0/1AB569A8, reading WAL from 0/1AB56970.
2021-03-28 06:46:08.150 CEST [323506] roiheimen@roiheimen STATEMENT:  SELECT lsn, data FROM pg_catalog.pg_logical_slot_get_changes($1, $2, $3, 'add-tables', $4::text)
2021-03-28 06:46:08.150 CEST [323507] roiheimen@roiheimen LOG:  starting logical decoding for slot "hcrrlsdeqfprfdfserstypxescnrpa"
2021-03-28 06:46:08.150 CEST [323507] roiheimen@roiheimen DETAIL:  Streaming transactions committing after 0/1AB569A8, reading WAL from 0/1AB56970.
2021-03-28 06:46:08.150 CEST [323507] roiheimen@roiheimen STATEMENT:  SELECT lsn, data FROM pg_catalog.pg_logical_slot_get_changes($1, $2, $3, 'add-tables', $4::text)
2021-03-28 06:46:08.150 CEST [323511] roiheimen@roiheimen LOG:  starting logical decoding for slot "ougejrrfhglwtmmlxgtfncrbimxlcb"
2021-03-28 06:46:08.150 CEST [323511] roiheimen@roiheimen DETAIL:  Streaming transactions committing after 0/1AB569A8, reading WAL from 0/1AB56970.
2021-03-28 06:46:08.150 CEST [323511] roiheimen@roiheimen STATEMENT:  SELECT lsn, data FROM pg_catalog.pg_logical_slot_get_changes($1, $2, $3, 'add-tables', $4::text)
2021-03-28 06:46:08.150 CEST [323506] roiheimen@roiheimen LOG:  logical decoding found consistent point at 0/1AB56970
2021-03-28 06:46:08.150 CEST [323506] roiheimen@roiheimen DETAIL:  There are no running transactions.
2021-03-28 06:46:08.150 CEST [323506] roiheimen@roiheimen STATEMENT:  SELECT lsn, data FROM pg_catalog.pg_logical_slot_get_changes($1, $2, $3, 'add-tables', $4::text)
2021-03-28 06:46:08.150 CEST [323507] roiheimen@roiheimen LOG:  logical decoding found consistent point at 0/1AB56970
2021-03-28 06:46:08.150 CEST [323507] roiheimen@roiheimen DETAIL:  There are no running transactions.
2021-03-28 06:46:08.150 CEST [323507] roiheimen@roiheimen STATEMENT:  SELECT lsn, data FROM pg_catalog.pg_logical_slot_get_changes($1, $2, $3, 'add-tables', $4::text)
2021-03-28 06:46:08.150 CEST [323511] roiheimen@roiheimen LOG:  logical decoding found consistent point at 0/1AB56970
2021-03-28 06:46:08.150 CEST [323511] roiheimen@roiheimen DETAIL:  There are no running transactions.
2021-03-28 06:46:08.150 CEST [323511] roiheimen@roiheimen STATEMENT:  SELECT lsn, data FROM pg_catalog.pg_logical_slot_get_changes($1, $2, $3, 'add-tables', $4::text)

```

### Additional context

```
root@roiheimen:~# dpkg -l | grep postgres
ii  postgresql                     12+214ubuntu0.1                   all          object-relational SQL database (supported version)
ii  postgresql-12                  12.4-0ubuntu0.20.04.1             amd64        object-relational SQL database, version 12 server
ii  postgresql-12-wal2json         2.2-1                             amd64        PostgreSQL logical decoding JSON output plugin
ii  postgresql-client-12           12.4-0ubuntu0.20.04.1             amd64        front-end programs for PostgreSQL 12
ii  postgresql-client-common       214ubuntu0.1                      all          manager for multiple PostgreSQL client versions
ii  postgresql-common              214ubuntu0.1                      all          PostgreSQL database-cluster manager
ii  postgresql-contrib             12+214ubuntu0.1                   all          additional facilities for PostgreSQL (supported version)
root@roiheimen:~# lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 20.04.1 LTS
Release:	20.04
Codename:	focal
```

I have after this tried to:
 a) make it log to systemd-journal (seems postgres doesn't have this! even stderr creates its own file)
 b) disable the log
 
Neither which would be more than a band-aid, but I'm unable to do etiher. When I do `log_destination = syslog` it does go to the `/var/log/syslog` file but that helps noone. That's all just distro-stuff of course, but argh.