Ticket 15 - Improve instance configuration ability
    
    Bug Description:  We should be able to create and configure an instance
    from python, rather than template-dse.ldif. This gives us the ability
    to *install* and *upgrade* to a specific base version of the DS server.
    
    Fix Description:  Implement stubs for our plugins, and prove the operation
    works by enabling whoami during a minimal python install.
    
    https://pagure.io/lib389/issue/15
    
    Author: wibrown
    
    Review by: spichugi (Thanks!)