Implement a Danger reminder with checklist to consider validating on pipeline changes
Description
As discussed in the 2020-11-24 EP Team Weekly there should be a reminder when .gitlab/ci/**/*
file should remind to consider effects and validate a set of conditions for pipelines:
- Effects on different pipeline types
- Performance issues post merge that warrant communication
- Fork pipeline impacts
To avoid the kind of problems we had with gitlab-com/gl-infra/production#3013 (closed), the template should include a step to communicate all CI changes in Slack.
Edited by Kyle Wiebers