Add gitlab:clickhouse:rollback CI job
What does this MR do and why?
This MR adds a gitlab:clickhouse:rollback
CI job to test ClickHouse migrations in case there are any errors in the scripts.
Part of #430980
Screenshots or screen recordings
Screenshots are required for UI changes, and strongly recommended for all other merge requests.
CI job: https://gitlab.com/gitlab-org/gitlab/-/jobs/5526615948#L201
MR acceptance checklist
This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.
-
I have evaluated the MR acceptance checklist for this MR.
Edited by Pedro Pombeiro