ERROR: No replica set members match selector "Primary()" (ServerSelectionTimeoutError)
 Traceback (most recent call last):
   File "/data/mci/26eeb19bb7775a2b0ffb6f3b40c17caf/src/test/__init__.py", line 355, in wrap
     return f(*args, **kwargs)
   File "/data/mci/26eeb19bb7775a2b0ffb6f3b40c17caf/src/test/__init__.py", line 355, in wrap
     return f(*args, **kwargs)
   File "/data/mci/26eeb19bb7775a2b0ffb6f3b40c17caf/src/test/test_ssl.py", line 352, in test_cert_ssl_validation_hostname_matching
     serverSelectionTimeoutMS=100))
   File "/data/mci/26eeb19bb7775a2b0ffb6f3b40c17caf/src/test/utils.py", line 285, in connected
     client.admin.command('ismaster')  # Force connection.
   File "/data/mci/26eeb19bb7775a2b0ffb6f3b40c17caf/src/pymongo/database.py", line 524, in command
     with client._socket_for_reads(read_preference) as (sock_info, slave_ok):
   File "/opt/python/2.6/lib/python2.6/contextlib.py", line 16, in __enter__
     return self.gen.next()
   File "/data/mci/26eeb19bb7775a2b0ffb6f3b40c17caf/src/pymongo/mongo_client.py", line 905, in _socket_for_reads
     with self._get_socket(read_preference) as sock_info:
   File "/opt/python/2.6/lib/python2.6/contextlib.py", line 16, in __enter__
     return self.gen.next()
   File "/data/mci/26eeb19bb7775a2b0ffb6f3b40c17caf/src/pymongo/mongo_client.py", line 869, in _get_socket
     server = self._get_topology().select_server(selector)
   File "/data/mci/26eeb19bb7775a2b0ffb6f3b40c17caf/src/pymongo/topology.py", line 222, in select_server
     address))
   File "/data/mci/26eeb19bb7775a2b0ffb6f3b40c17caf/src/pymongo/topology.py", line 181, in select_servers
     selector, server_timeout, address)
   File "/data/mci/26eeb19bb7775a2b0ffb6f3b40c17caf/src/pymongo/topology.py", line 197, in _select_servers_loop
     self._error_message(selector))
 ServerSelectionTimeoutError: No replica set members match selector "Primary()"