Fix MySQL compatibility in zero downtime migration helpers
What does this MR do?
This MR fixes MySQL for zero downtime migration helpers introduced in https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/3860
Closes #17711 (closed)
This MR fixes MySQL for zero downtime migration helpers introduced in https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/3860
Closes #17711 (closed)