Issue originated from https://gitlab.com/gitlab-com/gl-infra/reliability/-/issues/16261 In [Chatops](https://gitlab.com/gitlab-com/chatops/-/tree/master/), implement a warning message if a new feature flag is enabled in a large percentage rollout step. Probably involves adding an additional check [here](https://gitlab.com/gitlab-com/chatops/blob/master/lib/chatops/commands/feature.rb#L265). Questions that need to be addressed (probably during code review): * should we skip this check for staging? * where should the threshold be set?