rhpkg doesn't work on ppc64le

12:30:03 12:30:03  Traceback (most recent call last):
12:30:03 12:30:03    File "/usr/bin/rhpkg", line 15, in <module>
12:30:03 12:30:03      from rhpkg.__main__ import main
12:30:03 12:30:03    File "/usr/lib/python3.6/site-packages/rhpkg/__init__.py", line 21, in <module>
12:30:03 12:30:03      import six.moves.configparser as ConfigParser
12:30:03 12:30:03  ModuleNotFoundError: No module named 'six'