Update to v2.21.0

Also adjust the patch that forces the system CA bundle to be used so
that behavior doesn't change if python-certifi is installed. It's
patched to point at the system CA bundle as well, but there's no reason
we need to assume that or use it.

python-requests.spec

@@ -9,8 +9,8 @@
 
 
 Name:           python-requests
-Version:        2.20.0
-Release:        2%{?dist}
+Version:        2.21.0
+Release:        1%{?dist}
 Summary:        HTTP library, written in Python, for human beings
 
 License:        ASL 2.0
@@ -141,6 +141,10 @@ PYTHONPATH=%{buildroot}%{python3_sitelib} %{__python3} -m pytest -v
 
 
 %changelog
+* Thu Dec 13 2018 Jeremy Cline <jeremy@jcline.org> - 2.21.0-1
+- Update to v2.21.0
+- Don't rely on certifi being patched properly to use the system CA bundle
+
 * Mon Nov 26 2018 Miro Hrončok <mhroncok@redhat.com> - 2.20.0-2
 - No pytest-httpbin for Python 2