Enable storage account infrastructure encryption

[jonnyry]

Resolves #4001

What is being addressed

Enable storage account infrastructure encryption.

Since storage account infrastructure encryption can only be turned on when a storage account is first created (unless you allow terraform to destroy the storage account and recreate it), this change is only applied on first deployment of a TRE (or a template component). Storage accounts that exist within an existing TRE deployment will not be affected.

The terraform pattern used to acheive this behaviour is as follows:

resource "azurerm_storage_account" "stg" {

  ... existing attributes ...

  # changing this value is destructive, hence attribute is in lifecycle.ignore_changes block below
  infrastructure_encryption_enabled = true

  lifecycle { ignore_changes = [infrastructure_encryption_enabled ] }
}

[github-actions[bot]]

Unit Test Results

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Results for commit 522aaa7b.

[yuvalyaron]

@tamirkamara yes, they are compatible