add a basic script that tests nvlist_in and nvlist_out functionality
add a basic script that tests nvlist_in and nvlist_out functionality

The script converts a python dictionary to an nvlist and back to
a dictionary. The nvlist and final dictionary are dumped for visual
inspection.
The original dictionary contains a variety of value types including
booleans, integers, strings, lists of those types, a nested dictionary
and a list of dictionaries.

ClusterHQ/pyzfs