SeSeicht

I already did that and will create a PR for that the next days

@MariusStorhaug great work! What I don't get: When you are using `ARM_` and when `Azure_` in variable names? For example, you renamed `env.ARM_SUBSCRIPTION_ID` -> `env.AZURE_SUBSCRIPTION_ID` [here](https://github.com/Azure/ResourceModules/pull/1608/files#diff-89a5dd00fd1fa24c13a226d6714c9caba2e713c28d094d1751a690a1afa81e7aR82) but did not change...

hey, I tried @charotAmine code, but it didn't worked for me. But I created a similar way to solve this: @alex-frankel goes in the same direction like your code snippet...

I tried to reconstruct this issue. For me it looks like expected now. The `isHnsEnabled` has to be set in the initial creation of the SA. Afterwards this is not...