title: Python 2.7.6 TLSv1.2 in requests
body: <p>I use python version 2.7.6 and need to make a request using TLSv1.2.
  I tried something like this to specify the version of tls:</p>
  
  <pre><code>class SslAdapter():
  def init_poolmanager(self, connections, maxsize, block=False):
      self.poolmanager = PoolManager(num_pools=connections,
                                     maxsize=maxsize,
                                     block=block,
                                     ssl_version=ssl.PROTOCOL_TLSv1_2)
  s=requests.Session() 
  s.mount('https://', SslAdapter())
  s.get('https://google.com',verify=False)
  </code></pre>
  
  <p>But in debugger i see that version of TLS in request is TLSv1.0.
  Can you suggest how to properly specify TLS version?
  Thanks.</p>