Fix APIVersion.__getnewargs__
``__getnewargs__()`` must return a tuple.
Fixes ``E0312(invalid-getnewargs-returned), APIVersion.__getnewargs__]
__getnewargs__ does not return a tuple)``.
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>