Deprecation issue with pkcs12

[xoolive]

• The following import is deprecated

  from urllib3.contrib.pyopenssl import PyOpenSSLContext

• Would this dependency still be necessary?

  pyOpenSSL = ">=22.0"

Look here: https://stackoverflow.com/questions/45410508/python-requests-ca-certificates-as-a-string

[xoolive]

moved out of traffic project