Add Ecosystem group to frontmatter for unowned integration pages

doc/user/project/integrations/bamboo.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Atlassian Bamboo CI Service
 
 GitLab provides integration with Atlassian Bamboo for continuous integration.

doc/user/project/integrations/bugzilla.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Bugzilla Service
 
 Navigate to the [Integrations page](overview.md#accessing-integrations),

doc/user/project/integrations/custom_issue_tracker.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Custom Issue Tracker service
 
 To enable the Custom Issue Tracker integration in a project:

doc/user/project/integrations/discord_notifications.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Discord Notifications service
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/22684) in GitLab 11.6.

doc/user/project/integrations/emails_on_push.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Enabling emails on push
 
 By enabling this service, you will receive email notifications for every change

doc/user/project/integrations/github.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # GitHub project integration **(PREMIUM)**
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/3836) in GitLab Premium 10.6.

doc/user/project/integrations/gitlab_slack_application.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # GitLab Slack application **(FREE ONLY)**
 
 > - Introduced in GitLab 9.4.

doc/user/project/integrations/hangouts_chat.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Hangouts Chat service
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/43756) in GitLab 11.2.

doc/user/project/integrations/hipchat.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Atlassian HipChat
 
 GitLab provides a way to send HipChat notifications upon a number of events,

doc/user/project/integrations/index.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Project integrations
 
 You can find the available integrations under your project's

doc/user/project/integrations/irker.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Irker IRC Gateway
 
 GitLab provides a way to push update messages to an Irker server. When

doc/user/project/integrations/jira.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # GitLab Jira integration
 
 GitLab Issues are a powerful tool for discussing ideas and planning and tracking work.

doc/user/project/integrations/jira_cloud_configuration.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Creating an API token in Jira Cloud
 
 An API token is needed when integrating with Jira Cloud, follow the steps

doc/user/project/integrations/jira_server_configuration.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Creating a username and password for Jira Server
 
 We need to create a user in Jira which will have access to all projects that

doc/user/project/integrations/mattermost.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Mattermost Notifications Service
 
 The Mattermost Notifications Service allows your GitLab project to send events (e.g., `issue created`) to your existing Mattermost team as notifications. This requires configurations in both Mattermost and GitLab.

doc/user/project/integrations/mattermost_slash_commands.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Mattermost slash commands
 
 > Introduced in GitLab 8.14

doc/user/project/integrations/microsoft_teams.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Microsoft Teams service
 
 ## On Microsoft Teams

doc/user/project/integrations/mock_ci.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Mock CI Service
 
 **NB: This service is only listed if you are in a development environment!**

doc/user/project/integrations/overview.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Integrations
 
 Integrations allow you to integrate GitLab with other applications. They

doc/user/project/integrations/redmine.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Redmine Service
 
 1. To enable the Redmine integration in a project, navigate to the

doc/user/project/integrations/services_templates.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Service templates
 
 Using a service template, GitLab administrators can provide default values for configuring integrations at the project level.

doc/user/project/integrations/slack.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Slack Notifications Service
 
 The Slack Notifications Service allows your GitLab project to send events

doc/user/project/integrations/slack_slash_commands.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Slack slash commands **(CORE ONLY)**
 
 > Introduced in GitLab 8.15.

doc/user/project/integrations/unify_circuit.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Unify Circuit service
 
 The Unify Circuit service sends notifications from GitLab to the conversation for which the webhook was created.

doc/user/project/integrations/webex_teams.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Webex Teams service
 
 You can configure GitLab to send notifications to a Webex Teams space.

doc/user/project/integrations/webhooks.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # Webhooks
 
 > **Note:**

doc/user/project/integrations/youtrack.md

+---
+stage: Create
+group: Ecosystem
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
 # YouTrack Service
 
 JetBrains [YouTrack](https://www.jetbrains.com/help/youtrack/standalone/YouTrack-Documentation.html) is a web-based issue tracking and project management platform.