Improve runtime tests to assert azure functions local responses

[Anjana Supun]

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We should be able to use core tools along with azurite and CosmosDB Emulator

Refs - https://seekdavidlee.medium.com/how-to-setup-and-run-integration-tests-with-azure-storage-or-cosmos-db-as-dependencies-on-github-673d1f8e73e3

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