Doesn't work with the debian requests package.

[Joshua Banton]

Piggybacking off of this PR: getsentry #12

If you try to use requests-mock in Ubuntu you get this error without this change:

 ImportError: No module named packages.urllib3.response

There is a Github PR here. https://github.com/openstack/requests-mock/pull/4

[Jamie Lennox (jamielennox)]

I want to play purist here. requests-mock should emulate exactly what requests does and requests uses packages.urllib3 (why they do that is a way bigger question that has been fought a number of times).

If debian/ubuntu changes the way that requests is bundled it is also debian/ubuntu's responsibility to patch dependant packages. I know fedora/rhel has the same problem and patches requests-mock [1] to match requests.

If this leads to a fight about who should package what then i'll end up just fixing it upstream but this is a distro issue IMO.

[1] http://pkgs.fedoraproject.org/cgit/rpms/python-requests-mock.git/tree/0002-Use-system-urllib3-package.patch

[Jamie Lennox (jamielennox)]

Subscribed the ubuntu package maintainers of both requests and requests-mock for there opinions.

[James Page (james-page)]

Running a quick check on requests/requests-mock in 16.04; requests does provided the bundled urllib3 module, so requests-mock just dtrt.

Marking Invalid as nothing todo >= 16.04.