I'm trying to create a Kubernetes Side-Car container that will help manage the mongo replica set. However, I can't seem to use the CSharp driver to connect to a mongo instance that was started with the --replSet option. I'd like for my C# application to send the 
replSetInitiate command.  However, the driver refuses to connect by throwing a Timeout exception.

var _mongoClient = new MongoClient("mongodb://localhost:30006/?replicaSet=rs0");
var dbAdmin = _mongoClient.GetDatabase("admin");
var result = await dbAdmin.RunCommandAsync<BsonDocument>("{replSetInitiate : {} }");