loki

Fixes #3581

This common-labels functionality made the CLI tool harder to use when
piping the output into other programs. The common labels would be printed
on STDERR, while the rest of the labels and log-lines were emitted on
STDOUT.
I don't think we need this functionality any more, now that we have the
--exclude-label option.

Checklist

• Documentation added removed and

I want to reduce the amount of log-spam in the DB logs. Is there a better way of executing the CREATE DATABASE queries? Postgres doesn't have the WHERE NOT EXISTS clause - but it's still possible to check if tables are already present.

I'm not sure where these originate from - heplify-server, homer-app, or some other script.

2020-05-29 04:54:15.076 UTC [1] LOG:  received sm

There's a bunch of tests that don't work, mostly because the fixtures in ./test/fixtures.json are invalid. This is because there's less data processing happening in 6.0.0 before sending than before. Logs in this version only get formatted and stringified just before sending out for easier processing.