Improve communication of security releases between delivery and EP teams
If we know of a security release, we should be informed of those to improve the response time, so that we have more context if master
or MR failures start to happen.
For instance, we could include an automatic Slack message to the EP Slack channel when a security release process starts.
This is in response to gitlab-org/gitlab#388357 (closed).
Edited by Rémy Coutable