In the daemon response, include a minimum set of attributes for

config_examples/mta-sts-daemon.yml.internal

config_examples/mta-sts-daemon.yml.postgres

config_examples/mta-sts-daemon.yml.redis

config_examples/mta-sts-daemon.yml.redis_sentinel

config_examples/mta-sts-daemon.yml.sqlite

config_examples/mta-sts-daemon.yml.sqlite_unixsock

man/mta-sts-daemon.yml.5.adoc

postfix_mta_sts_resolver/defaults.py

postfix_mta_sts_resolver/responder.py

postfix_mta_sts_resolver/utils.py