Move the code into a new namespace, argus

This drops the hack from __init__, which added the current module
to sys.modules.
Add a new option, debug.
Add some context useful for debugging
Change config option to 0

It is passed to a Powershell script, through winrm, which can't treat
the str(option) as a boolean.
Remove test_discover

There's no point in having a discover function, since unittest
discovers by default the tests.
Move the files again, so we could use pbr
Add a basic setup.py
Change the path to the tests in testr conf
Update comment
Add missing option