obs_ctio0m9 currently has no tests and needs some badly.

The goal of this ticket is to implement some tests to secure it against breaking changes going forward, and once this is done, include it in the lsst_obs metapackage, and lsst_distrib.

Once this has been done ci_ctio0m9 should be added to the CI suite, so that the calib construction code in pipe_drivers gets put under CI as well. A separate ticket exists to get ci_ctio0m9 running and get it included, see DM-11926