We have two major problems with the replicaset unit tests:

1. The failover tests kill the servers while attempting to simulate a failover, which breaks almost every test that follows it. We should disable the failover tests since they do not actually run.
2. A lot of the tests following the failover tests, including "ReplSet (Operations)", " ReplSet (ReadPreference)", "SDAM", "Sessions", and 'Unicode", are broken b/c we haven't been running them to check them.
3. A lot of the "Retryable Writes" tests are passing, but are failing the session leak checker.