Add mail_room logfile config
- Add structured logging file name
- Attempt at test
Following: https://docs.gitlab.com/omnibus/settings/gitlab.yml.html#adding-a-new-setting-to-gitlabyml
as part of this MR: gitlab!19186 (merged)
fluentd MR: gitlab-cookbooks/gitlab_fluentd!96 (merged)
Related to gitlab#35108 (closed)
Edited by GitLab Release Tools Bot