python-certifi-2016.2.28-2.1

- Update to version 2016.2.28
- Update copyright year in spec file
- Fix executable warning (fix taken from python3-certifi)

- Update to version 2015.11.20.1

- Update to version 2015.9.6.2:
  * Actually ship weak cert bundle.
  * Provide old cert bundle.
  * Use secure roots by default.
  * Update scripts to use mkcert.org
  * Concatenate the two roots
  * Add the needed 1024-bit roots
  * Move mkcert output to non-core file
- Fix dependencies on SLES 11
- Certifi is released under MPL-2.0; fix the license tag
- Rebase python-certifi-shipped-requests-cabundle.patch

- Initial packaging