Comment 6 for bug 1770355

OK, so we have a few approaches to solve it.
1) Promote new containers based on 7.5 - promotion jobs should pass for it.
2) To update only we need to update:
  a) change to container-check script: https://github.com/imain/container-check/pull/2
  b) change to extras: https://review.openstack.org/#/c/567550/
3) to disable base os repo temporary: https://review.openstack.org/#/c/567526/