docker: allow kafka to be consumed from the host
using a config like:
journal: brokers: - 127.0.0.1:29002
shoud allow to execute swh commands like swh storage replay
or swh dataset export
from the host, consuming kafka topics from the
docker-compose.
Also configure kafka topics cleanup policy to 'compact'
instead of the default 'delete', so the user can keep its data in the test kafka server for more than a week.
Migrated from D6248 (view on Phabricator)