migration:upgrade-mysql-ce-to-ee fails on stable branches
rake aborted! PostgreSQL is the only supported database from GitLab 12.1
The job is failing because in master we are no longer running mysql and any branch that does not have a match in CE, will try to pull from master.
This is a problem for all EE stable branches, this job will keep failing. This will be an issue especially when we start doing backports.
This is closely related to https://gitlab.com/gitlab-org/gitlab-ce/issues/63525