Repro steps:

1. Create resources on Azure to be able to deploy an F# Azure function
2. Create an Azure cluster in MongoDB Atlas
3. Create an F# function that exposes a REST API with a single call (doDbStuff) that inserts and finds documents.
4. Call this function continuously from 4 or 5 different threads/processes.
5. With the traffic from 4, do a failover. This behaves as expected.
6. With the traffic from 4, do a cluster tier upgrade (e.g. M20 to M30). Expected: similar behavior as 5. Actual: function can't contact cluster for about 8 to 10 minutes if the function is deployed as a Windows Function or indefinitely if deployed as a Docker (containerized) function.

Request: driver should be resilient to Atlas Azure cluster tier upgrades.