yum command fails with error AttributeError: 'module' object has no attribute 'PROTOCOL_TLS_CLIENT'

Issue

• While running yum command it fails with below trace back error

  # yum repolist
  Loaded plugins: product-id, protectbase, rhnplugin, search-disabled-repos, subscription-
                : manager, versionlock
  Traceback (most recent call last):
    File "/bin/yum", line 29, in <module>
      yummain.user_main(sys.argv[1:], exit_code=True)
    File "/usr/share/yum-cli/yummain.py", line 375, in user_main
      errcode = main(args)
    File "/usr/share/yum-cli/yummain.py", line 170, in main
      base.getOptionsConfig(args)
    File "/usr/share/yum-cli/cli.py", line 263, in getOptionsConfig
      self.conf
    File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 1079, in <lambda>
     conf = property(fget=lambda self: self._getConfig(),
    File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 420, in _getConfig
      self.plugins.run('init')
    File "/usr/lib/python2.7/site-packages/yum/plugins.py", line 188, in run
       func(conduitcls(self, self.base, conf, **kwargs))
   File "/usr/share/yum-plugins/rhnplugin.py", line 118, in init_hook
     login_info = up2dateAuth.getLoginInfo(timeout=timeout)
    File "/usr/lib/python2.7/site-packages/up2date_client/up2dateAuth.py", line 248, in getLogin                       Info
      login(timeout=timeout)
    File "/usr/lib/python2.7/site-packages/up2date_client/up2dateAuth.py", line 216, in login
      li = server.up2date.login(systemId)
    File "/usr/lib/python2.7/site-packages/up2date_client/rhnserver.py", line 67, in __call__
       return rpcServer.doCall(method, *args, **kwargs)
    File "/usr/lib/python2.7/site-packages/up2date_client/rpcServer.py", line 217, in doCall
      ret = method(*args, **kwargs)
    File "/usr/lib64/python2.7/xmlrpclib.py", line 1233, in __call__
       return self.__send(self.__name, args)
    File "/usr/lib/python2.7/site-packages/up2date_client/rpcServer.py", line 48, in _request1
      ret = self._request(methodname, params)
    File "/usr/lib/python2.7/site-packages/rhn/rpclib.py", line 449, in _request
      self._host, self._handler, request, verbose=self._verbose
    File "/usr/lib/python2.7/site-packages/rhn/transports.py", line 200, in request
     headers, fd = req.send_http(host, handler)
    File "/usr/lib/python2.7/site-packages/rhn/transports.py", line 882, in send_http
      self._connection.connect()
    File "/usr/lib/python2.7/site-packages/rhn/connections.py", line 239, in connect
      self.sock.init_ssl(self.host)
    File "/usr/lib/python2.7/site-packages/rhn/SSL.py", line 101, in init_ssl
      self._ctx = SSL.SSLContext(SSL.PROTOCOL_TLS_CLIENT)
  AttributeError: 'module' object has no attribute 'PROTOCOL_TLS_CLIENT'