Ticket 88 - python install and remove for tests
    
    Bug Description:  We need to be able to test instances with python
    and no perl tools. This will help us to progress and remove perl
    from the codebase, helping improve our portability.
    
    Fix Description:  Add support to remove instances with python.
    Fix some setup python issues. Improve the lib389 test suite
    to handle some of the edge cases acound the changes.
    
    In general, this helps to improve our python 3 support across
    the board as this allows us to perform pure python 3 installs
    and tests.
    
    https://pagure.io/lib389/issue/88
    
    Author: wibrown
    
    Review by: spichugi (Thank you!)