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Add 6 months limit to FF lifecycle

Fabio Pitino requested to merge docs/fp-limit-ff-lifecycle into master

What does this MR do and why?

Today we have a monthly report that is sent to each engineering manager indicating feature flags that are older than 2 milestones and need attention.

Given that each feature flag represents a technical debt and that there are many of these flags that are very old, we should have a time limit after which action is required.

This MR documents the existence of a feature flag monthly report and suggests a harder limit of 6 months after which we can take any of the following (or maybe more) actions:

  1. Enable the feature flag by default (if not done already) and remove it from the codebase.
  2. Convert it to a setting (instance/group/project) so people can opt-out/in.
  3. Back it off if still disabled and if deemed no longer necessary.

cc @avielle @cheryl.li @m_gill

Screenshots or screen recordings

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How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

Edited by Fabio Pitino

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