Add Mattermost Chatops Documentation
8.14 is adding Mattermost Chatops. We need documentation for:
- Configuring Mattermost https://gitlab.com/gitlab-org/gitlab-ce/issues/22540
- Mattermost slash commands https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7438
The Content Team will assist the CI team to:
- Create the documentation structure including topics and topic sections
- Assist with getting some of the content in
- Review the CI teams docs