Despite having the `[assembly: CollectionBehavior(DisableTestParallelization = true)]` attribute, it appears `dotnet test` is still running tests in parallel. To address, use a configuration file to disable parallelization.
Fix the following warning and turn on "treat warnings as errors" for our .NET projects.
```
Deployment/InvokeOptions.cs(6,60): warning CS1574: XML comment has cref attribute 'InvokeAsync{T}(string,
```
