[Feature flag] Enable and remove `sourcegraph` feature flag
## What Remove the `sourcegraph` feature flag ... ## Owners - Team: ~"group::editor" - Most appropriate slack channel to reach out to: `#g_create_editor` - Best individual to reach out to: @pslaughter ## Expectations ### What are we expecting to happen? - Not much for `.com`. - For self-hosted users, they'll have the ability to enable a Sourcegraph integration for their instance. ### What might happen if this goes wrong? - If this feature flag is removed, we will not be able to disable Sourcegraph other than through the admin settings. ### What can we monitor to detect problems with this? - Client-side errors are sent to Sentry. ## Beta groups/projects - `gitlab-org/gitlab` project - `gitlab-org`/`gitlab-com` groups - `sourcegraph` group ## Roll Out Steps - [x] Confirm that QA tests pass with the feature flag enabled (if you're unsure how, contact the relevant [stable counterpart in the Quality department](https://about.gitlab.com/handbook/engineering/quality/#individual-contributors)) - [x] Enable on staging (`/chatops run feature set feature_name true --staging`) - [x] Test on staging - [x] Ensure that documentation has been updated - [x] Enable on GitLab.com for individual groups/projects listed above and verify behaviour (`/chatops run feature set --project=gitlab-org/gitlab feature_name true`) - [x] Coordinate a time to enable the flag with the SRE oncall and release managers - In `#production` mention `@sre-oncall` and `@release-managers`. Once an SRE on call and Release Manager on call confirm, you can proceed with the rollout - [x] Announce on the issue an estimated time this will be enabled on GitLab.com - [x] Enable on GitLab.com by running chatops command in `#production` (`/chatops run feature set feature_name true`) - [x] Cross post chatops Slack command to `#support_gitlab-com` ([more guidance when this is necessary in the dev docs](https://docs.gitlab.com/ee/development/feature_flags/controls.html#where-to-run-commands)) and in your team channel - [x] Announce on the issue that the flag has been enabled - [ ] Remove feature flag and add changelog entry - [ ] After the flag removal is deployed, [clean up the feature flag](https://docs.gitlab.com/ee/development/feature_flags/controls.html#cleaning-up) by running chatops command in `#production` channel ## Rollback Steps - [ ] This feature can be disabled by running the following Chatops command: ``` /chatops run feature set --project=gitlab-org/gitlab feature_name false ``` ### Availability and Testing Please coordinate the changes to the feature flag status with a SET so that QA team can monitor for any failures.
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