Investigate sporadic issues with ADAL references

Because of how ADAL expects to load platform specific assemblies, they often run into issues leading to runtime binding failures.

This issue impacts customers outside of Azure Functions as well (there is some additional information about the problem here: https://github.com/AzureAD/azure-activedirectory-library-for-dotnet/issues/511), so we should reach out to the team to see how we can collaborate to address this, but given the impact to Azure Functions customers with this common scenario, we should investigate potential tactical fixes to prevent this from happening in our environment.