Migration test fails randomly on CCE schema validation
Description
The migration test seems to fail from time to time with an error on database schema validation in CCE service:
Given that testing this manually (starting 3.2.0 distro, then upgrading to latest master and keeping the database) works and this happens randomly, this is most likely an issue with the test and not the migration itself. We need to find the cause of those random failures and fix it.
Acceptance criteria:
The migration test passes (at least 5 consecutive runs have passed on Jenkins)
