By default, test the latest production image

ci/common.yml

@@ -17,7 +17,7 @@
 .get_latest_image: &get_latest_image
   - |
     if [[ -z "${IMAGE}" ]]; then
-      IMAGE=$(openstack image list --property os_distro_major="${OS}" --property os_edition="Test" --shared --sort created_at -c ID -f value | tail -n1)
+      IMAGE=$(openstack image list --property os_distro_major="${OS}" --property os_edition="Base" --public --sort created_at -c ID -f value | tail -n1)
     fi
 
 .test_physical: