python-mailman-test-3.3.0-bp153.2.38

- do not require python-cffi, it will be required by
  python-PyNaCl

- be able to run test on 15

- disable src/mailman/commands/tests/test_cli_create.py
  https://gitlab.com/mailman/mailman/issues/654

- call spec-cleaner

- requires setuptools

- /usr/sbin instead of /sbin in mailman.cfg

- run the testsuite

- initial version 3.3.0 [SLE-7686]