security/py-{acme,certbot}: Update to 0.16.0

[cpm]

Summary

security/py-{acme,certbot}: Update to 0.16.0

Common:

- Update PORTVERSION and distinfo checksum (0.16.0)

Changelog:

  https://github.com/certbot/certbot/blob/master/CHANGELOG.md#0160---2017-07-05

Reviewed_by:	koobs (maintainer, py-certbot)
Approved by:	koobs (maintainer, py-certbot)
Differential_Revision: D11517

Test Plan

• portlint -ac output looks fine.
• poudriere testport builds fine on 10.3/i386, 10.3/amd64, 11.0/i386, 11.0/amd64, 12.0/i386 and 12.0/amd64.
• make test has passed all tests fine.

[koobs]

Can you add an explanation of the requests version reversion to the commit log message?

[cpm]

In D11517#238807, @koobs wrote:

Can you add an explanation of the requests version reversion to the commit log message?

Upstream bumped requests requirement to >=2.10 to fix issue 3804

An unexpected error occurred:
TypeError: __str__ returned non-string (type Error)

See https://github.com/certbot/certbot/issues/3804 for further details.

[cpm]

I noticed that I can undo the py-requests requirement version because we have already py-requests version 2.17.3 in the ports tree. Now it makes sense to discard the change from acme/setup.py.

[cpm]

Kubilay,

One more thing: If you're interested to maintain py-acme, please let me know.

[koobs]

@cpm LGTM. Re common maintainer, the existing workflow seems to be working well for now, no? :)