Issue 49156 - Clean up test suites dir structure and docstrings
    
    Description: We have a lot of plugin directories in dirsrvtests/tests/suites:
    - dynamic_plugins
    - [PluginName]_plugin - 27 directories
    While we are in the process of creating tickets for the porting sprint,
    it would be nice to have an organised structure. As discussed on the
    Engineering/QE Sync Up meeting we need to move all of them to 'plugins'
    dir.
    
    Also, as a part of test suites cleanup, we should organise test plans in
    the docstrings and IDs to an each test case (can be generated with
    Python 'import uuid; uuid.uuid4()').
    create_test.py script should be fixed too and it should check if the ID
    is unique throughout the tests.
    
    https://pagure.io/389-ds-base/issue/49156
    
    Reviewed by: wibrown, amsharma (Thanks!)