security/obfsproxy failed to build
https://lists.freebsd.org/pipermail/freebsd-pkg-fallout/Week-of-Mon-20171211/594493.html
- changed MASTER_SITE to CHEESESHOP
the original distfile URL doesn't work any more:
http://www.c-s.li/ports/obfsproxy-0.2.13.tar.gz
- deleted argparse from install_requires in files/patch-setup.py.
devel/py-argparse was removed from RUN_DEPENDS at r427780:
https://svnweb.freebsd.org/ports?view=revision&revision=427780
then obfsproxy failed to load the argparse entry_points:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=223320
- changed Twisted_Core back to Twisted in files/patch-setup.py.
devel/py-twistedCore was removed since r450958:
https://svnweb.freebsd.org/ports?view=revision&revision=450958
Proposed commit log message:
```
security/obfsproxy: Fix Build
- Switch MASTER_SITE to CHEESESHOP
- Switch pkg-plist to USE_PYTHON=autoplist
- Add LICENSE_FILE
- Add NO_ARCH
- Add regression test
Reviewed_by: koobs
Approved by: koobs (ports)
Approved by: portmgr (blanket)
Differential_Revision:
```