e8a0373 Sort external schema files

Authored and Committed by cheimes 6 years ago
    Sort external schema files
    
    get_all_external_schema_files() now returns schema files sorted.
    
    Fixes: https://pagure.io/freeipa/issue/7338
    
    Signed-off-by: Christian Heimes <cheimes@redhat.com>
    Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>