Improve migrations / background migrations testing strategy
What does this MR do?
This MR resolves concerns described in https://gitlab.com/gitlab-org/gitlab-ce/issues/36303
Does this MR meet the acceptance criteria?
-
Tests added for this feature/bug -
Has been reviewed by Backend -
Has been reviewed by Database
What are the relevant issue numbers?
Closes #36303 (closed)
Edited by Grzegorz Bizon