Merge branch 'mk-experiment-tracking-template' into 'master'

Add experimentation tracking template to Gitlab.org

See merge request gitlab-org/gitlab!54849

.gitlab/issue_templates/experiment_tracking_template.md

+<!-- Title suggestion: [Experiment Tracking] experiment-key - description of experiment -->
+
+## What
+
+Track the status of an experiment through to removal.
+
+1. Experiment key: `<experiment-key>`
+1. Framework: `experimentation.rb` | `gitlab_experiment`
+1. Feature flag name: <experiment-key>_experiment_percentage` | `<experiment-key>`
+
+This is an experiment tracking issue for: `<issue or epic link>` 
+using the scoped [experiment label](https://about.gitlab.com/handbook/engineering/development/growth/#experiment-tracking-issue).
+
+As well as defining the experiment rollout and cleanup, this issue incorporates the relevant 
+[`Feature Flag Roll Out`](https://gitlab.com/gitlab-org/gitlab/-/edit/master/.gitlab/issue_templates/Feature%20Flag%20Roll%20Out.md) steps. 
+
+## Owners
+
+- Team: `group::TEAM_NAME`
+- Most appropriate slack channel to reach out to: `#g_TEAM_NAME`
+- Best individual to reach out to: NAME
+
+## Expectations
+
+### What are we expecting to happen?
+
+### What might happen if this goes wrong?
+
+### What can we monitor to detect problems with this?
+<!-- Which dashboards from https://dashboards.gitlab.net are most relevant? Sentry errors reports can alse be useful to review -->
+
+### Tracked data
+<!-- brief description or link to issue or Sisense dashboard -->
+
+### Staging Test
+<!-- For experiments using `experimentation.rb`: To force this experiment on staging use `?force_experiment=<experiment-key>` -->
+<!-- list any steps required to setup this experiment, and link to a separate Staging environment test issue is applicable -->
+
+<!-- uncomment if testing with specific groups/projects on GitLab.com
+## Beta groups/projects
+
+If applicable, any groups/projects that are happy to have this feature turned on early. Some organizations may wish to test big changes they are interested in with a small subset of users ahead of time for example.
+
+- `gitlab-org/gitlab` project
+- `gitlab-org`/`gitlab-com` groups
+- ...
+-->
+
+### Experiment tracking log
+<!-- Add an overview and method for modifying the feature flag
+
+* Runtime: 30 days or until we reach statistical significance
+* We will roll this out behind a feature flag and expose this to 20% of users to start then ramp it up from there.
+* feature flag based on experiment key `<experiment-key>` (see `experimentation.rb` in GitLab, append '_experiment_percentage')
+
+`/chatops run feature set <experiment-key>_experiment_percentage <INITIAL_PERCENTAGE>`
+-->
+<!-- Add bullet points to track changes to the rollout of this experiment (feature flag changes) 
+
+* YYYY-MM-DD UTC - initial rollout to 20% of users
+* TBD - review - increase to 50% of users
+-->
+
+### Experiment Results
+<!-- update when experiment in/validated, set the scoped `~experiment::` status accordingly -->
+
+## Roll Out Steps
+
+- [ ] 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))
+- [ ] Enable on staging (`/chatops run feature set feature_name true --staging`)
+- [ ] Test on staging
+- [ ] Ensure that documentation has been updated
+- [ ] Enable on GitLab.com for individual groups/projects listed above and verify behaviour  (`/chatops run feature set --project=gitlab-org/gitlab feature_name true`)
+- [ ] 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
+- [ ] Announce on the issue an estimated time this will be enabled on GitLab.com
+- [ ] Enable on GitLab.com by running chatops command in `#production` (`/chatops run feature set feature_name true`)
+- [ ] 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
+- [ ] Announce on the issue that the flag has been enabled
+- [ ] Remove experiment code and feature flag and add changelog entry - a separate [cleanup issue](https://gitlab.com/gitlab-org/gitlab/-/issues/new?issuable_template=Experiment%20Successful%20Cleanup) might be required
+- [ ] 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 feature_name false
+```
+
+/label ~"feature flag" ~"devops::growth" ~"growth experiment" ~"experiment tracking" ~Engineering ~"workflow::scheduling" ~"experiment::pending"
+