Update hot patch documentation to ensure EOC familiarity and enable CI pipelines in the project
During the investigation of incident gitlab-com/gl-infra/production#16042 (comment 1470792153), the patcher project was used to try deploy a hotpatch instead of waiting for the regular deployment. The EOCs had not used the approach before and later identified that the CI pipelines on the project were not enabled.
As a corrective action:
- We should review the release steps in the project and ensure a successful patch can be deployed with the given instructions.
- Update guidance for EOC in handbook on incident mitigation and include that as part of EOC onboarding training.
- Ensure the CI pipelines are enabled.
Edited by Adil Farrukh