Issue 50634 - Clean up CLI errors output
    
    Description: CLI tools should print human easy readable messages
    if something went wrong.
    As discussed here: https://pagure.io/389-ds-base/pull-request/50624
    
    Change the CLI error processing so the dict type is always transformed.
    
    https://pagure.io/389-ds-base/issue/50634
    
    Reviewed by: mreynolds, mhonek (Thanks!)