r346431 (by lwhsu):
Specify using Python2, these .py files have not been converted to use Python3
yet, but the default Python version in ports has been switched to 3.
- Convert from plain to TAP for slightly improved introspection when skipping the tests due to requirements not being met.
- Test for the net/py-dpkt (origin) package being required when running the tests, instead of relying on a copy of the dpkt.py module from 2014. This enables the tests to work with py3. Subsequently, remove tests/sys/opencrypto/dpkt.py(c)? via make delete-old.
- Parameterize out python2 as $PYTHON.
Allow the end-user to pass along arguments to cryptotest.py via $CRYPTOTEST_ARGS
This allows someone to use -v to dump out standard output.