Do not use the Cipher List for NSS
Do not use the Cipher List for NSS

According to this issues:
https://github.com/Payum/Payum/issues/250
https://github.com/Payum/PayumBundle/issues/294

I know that in the current master branch Buzz replaced by the Guzzle PSR-7, but a lot of projects uses stable branch. Could you fix this issue in the current stable version?
Payum/Core