Adds randomization to test product ID names (#938)
Adds randomization to test product ID names (#938)

* Adds randomization to test product ID names
* Changes some product ID values to remain static

GoogleCloudPlatform/dotnet-docs-samples,GoogleCloudPlatform/dotnet-docs-samples,GoogleCloudPlatform/dotnet-docs-samples,GoogleCloudPlatform/dotnet-docs-samples