Update 2020 version with Azure Function and Blob MSI

[roslynlu]

Related command
az stream-analytics

Is your feature request related to a problem? Please describe.
We updated our swagger specs recently to fix some s360 bugs, and we would like our CLI to reflect those bug fixes: Azure/azure-rest-api-specs#17697

Describe the solution you'd like
Update Stream Analytics CLI to include these new features (Azure Function and Blob MSI)

Describe alternatives you've considered
N/A

Additional context
Swagger: https://github.com/Azure/azure-rest-api-specs/tree/main/specification/streamanalytics/resource-manager/Microsoft.StreamAnalytics/stable/2020-03-01
Documentation: https://docs.microsoft.com/en-us/azure/stream-analytics/

[yonzhan]

stream-analytics