Issue 50746 - Add option to healthcheck to list all the lint reports
    
    Description:
    Created tests that run healthcheck with the new --list-errors, --list-checks and --checks options
    and then check syntax of the output.
    I also added log.info to the health.py::_print_checks so I could check the log output of --list-checks.
    test_healthcheck_backend_missing_mapping_tree is set to run on proper version, because the bz1835619 / ds51091 is fixed.
    
    Relates: https://pagure.io/389-ds-base/issue/50746
    Relates: https://pagure.io/389-ds-base/issue/51091
    
    Reviewed by: spichugi (Thanks!)