qa/suites/upgrade: allow upgrades to Rocky 10–based containers

qa/suites/upgrade: allow upgrades to Rocky 10–based containers

Currently, the default OS used in our containers is CentOS Stream 9. We
want to test the upgrade path to images based on Rocky Linux 10.

This change is a temporary workaround for testing purposes. Rocky Linux
10 is expected to become the default base image, at which point
rockylinux-10 will no longer need to be explicitly included in the image
name. Therefore, we do not plan to merge this change.

Signed-off-by: Yaarit Hatuka <yhatuka@ibm.com>
(cherry picked from commit 49ebf82e8b6e186dca13be68c5e76aa4ff65adea)