security/py-requests-oauthlib: Update to 0.4.2

- Update to 0.4.2
- Switch distribution files from Github -> PyPi (CHEESESHOP)
- Add TESTS option for running the test suite
- Update RUN_DEPENDS and TEST_DEPENDS
- Use modern Python framework bits
- Remove unecessary patch (upstreamed)

Changes:

  * https://github.com/requests/requests-oauthlib/blob/master/HISTORY.rst

PR:		193097
Submitted by:	Muhammad Moinur Rahman <5u623l20 at gmail com> (with changes)


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@375209 35697150-7ecd-e111-bb59-0022644237b5