replSetReconfig is not safe to retry when there's an AutoReconnect error. If it succeeded before the network was disconnected, it will likely fail the retry.

I believe it is safe to retry the whole else-clause starting with replSetGetConfig

https://github.com/mongodb/mongo/blob/1d89d2c88bcb39045701b87612b866ae2eb49378/pytests/powertest.py#L1440

In this case, if the previous reconfig succeeded, the "if" at line 1457 will prevent attempting to reconfig again.