Replace cirros image versions not cached in the CI

Since [1], some cirros images have been deleted from the CI cache. It
could happen that using cirros images not cached, that imply to
download them, could fail. Any version not cached should be replaced by
its closer image version.

[1]https://review.opendev.org/c/openstack/project-config/+/873735

Related-Bug: #2039586
Change-Id: I3769e76fb6e6e5ea5a77bd52dc9c061f72431ac7
1 file changed