Reset the server pool only after marking the server Unknown

 [2020/05/08 03:59:42.871] FAIL [0.008s]: test_network_error_on_delete (test_client.TestMongoClientFailover)

 [2020/05/08 03:59:42.871] ----------------------------------------------------------------------

 [2020/05/08 03:59:42.871] Traceback (most recent call last):

 [2020/05/08 03:59:42.871]   File "/data/mci/25291165abb0d1998479e9fde6d10c27/src/test/test_client.py", line 1838, in test_network_error_on_delete

 [2020/05/08 03:59:42.871]     self._test_network_error(callback)

 [2020/05/08 03:59:42.871]   File "/data/mci/25291165abb0d1998479e9fde6d10c27/src/test/test_client.py", line 1808, in _test_network_error

 [2020/05/08 03:59:42.871]     self.assertEqual(SERVER_TYPE.Unknown, sd_a.server_type)

 [2020/05/08 03:59:42.871] AssertionError: 0 != 2

[2020/06/02 01:00:04.954] ERROR [0.122s]: test_reconnect (test_client.TestMongoClientFailover)

[2020/06/02 01:00:04.954] ----------------------------------------------------------------------

[2020/06/02 01:00:04.954] Traceback (most recent call last):

[2020/06/02 01:00:04.954]   File "/data/mci/5662e66da03f3c73c748cf914f9e0d87/src/test/test_client.py", line 1782, in test_reconnect

[2020/06/02 01:00:04.954]     self.assertRaises(ServerSelectionTimeoutError,

[2020/06/02 01:00:04.954]   File "/opt/python/jython2.7/Lib/unittest/case.py", line 476, in assertRaises

[2020/06/02 01:00:04.954]     callableObj(*args, **kwargs)

[2020/06/02 01:00:04.954]   File "/data/mci/5662e66da03f3c73c748cf914f9e0d87/src/pymongo/collection.py", line 1319, in find_one

[2020/06/02 01:00:04.954]     for result in cursor.limit(-1):

[2020/06/02 01:00:04.954]   File "/data/mci/5662e66da03f3c73c748cf914f9e0d87/src/pymongo/cursor.py", line 1192, in next

[2020/06/02 01:00:04.954]     if len(self.__data) or self._refresh():

[2020/06/02 01:00:04.954]   File "/data/mci/5662e66da03f3c73c748cf914f9e0d87/src/pymongo/cursor.py", line 1109, in _refresh

[2020/06/02 01:00:04.954]     self.__send_message(q)

[2020/06/02 01:00:04.954]   File "/data/mci/5662e66da03f3c73c748cf914f9e0d87/src/pymongo/cursor.py", line 988, in _Cursor__send_message

[2020/06/02 01:00:04.954]     response = client._run_operation_with_response(

[2020/06/02 01:00:04.954]   File "/data/mci/5662e66da03f3c73c748cf914f9e0d87/src/pymongo/mongo_client.py", line 1351, in _run_operation_with_response

[2020/06/02 01:00:04.954]     return self._retryable_read(

[2020/06/02 01:00:04.954]   File "/data/mci/5662e66da03f3c73c748cf914f9e0d87/src/pymongo/mongo_client.py", line 1442, in _retryable_read

[2020/06/02 01:00:04.954]     if not server.description.retryable_reads_supported:

[2020/06/02 01:00:04.954]   File "/opt/python/jython2.7/Lib/contextlib.py", line 17, in __enter__

[2020/06/02 01:00:04.954]     return self.gen.next()

[2020/06/02 01:00:04.954]   File "/opt/python/jython2.7/Lib/contextlib.py", line 17, in __enter__

[2020/06/02 01:00:04.954]     return self.gen.next()

[2020/06/02 01:00:04.954]   File "/data/mci/5662e66da03f3c73c748cf914f9e0d87/src/pymongo/mongo_client.py", line 1290, in _slaveok_for_server

[2020/06/02 01:00:04.954]     single = topology.description.topology_type == TOPOLOGY_TYPE.Single

[2020/06/02 01:00:04.954]   File "/opt/python/jython2.7/Lib/contextlib.py", line 17, in __enter__

[2020/06/02 01:00:04.954]     return self.gen.next()

[2020/06/02 01:00:04.954]   File "/opt/python/jython2.7/Lib/contextlib.py", line 17, in __enter__

[2020/06/02 01:00:04.954]     return self.gen.next()

[2020/06/02 01:00:04.954]   File "/data/mci/5662e66da03f3c73c748cf914f9e0d87/src/pymongo/mongo_client.py", line 0, in _get_socket

[2020/06/02 01:00:04.954]   File "/opt/python/jython2.7/Lib/contextlib.py", line 17, in __enter__

[2020/06/02 01:00:04.954]     return self.gen.next()

[2020/06/02 01:00:04.954]   File "/opt/python/jython2.7/Lib/contextlib.py", line 17, in __enter__

[2020/06/02 01:00:04.954]     return self.gen.next()

[2020/06/02 01:00:04.954]   File "/data/mci/5662e66da03f3c73c748cf914f9e0d87/src/test/pymongo_mocks.py", line 47, in get_socket

[2020/06/02 01:00:04.954]     raise AutoReconnect('mock error')

[2020/06/02 01:00:04.954] AutoReconnect: mock error