Public Preview: Azure AD Support for Azure Files SMB shares REST API

The public preview of Azure Active Directory (Azure AD) for Azure SMB Shares enables share-level read and write access for users, groups, and [managed identities](https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fazure%2Factive-directory%2Fmanaged-service-identity%2Foverview&data=05%7C01%7Ckviswanath%40microsoft.com%7Ce54ae04a53934ba90dad08db65d3fe91%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C638215733474335914%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=jz%2BNS0CPFDK3hYnXgupVc%2B%2FQuu912iuGcfo3%2F17LZwY%3D&reserved=0) (MI) when accessing through the REST API. With Azure AD support, applications can now access Azure file shares securely, without storing or managing any credentials. Applications can leverage managed identities to securely access the customer-owned file shares. [Azure Portal](https://ms.portal.azure.com/#home) also now supports using Azure AD to authenticate requests to Azure Files. Users can choose Azure AD identity-based authentication method for the actions they take through portal such as browsing their file share contents. Check out the [launch blog](https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fazure-storage-blog%2Fpublic-preview-introducing-azure-ad-support-for-azure-files-smb%2Fba-p%2F3826733&data=05%7C01%7Ckviswanath%40microsoft.com%7Ce54ae04a53934ba90dad08db65d3fe91%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C638215733474335914%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=otnNVdAfOnWRrPon7dcUaNrvAI1QvTz687EuE217Ut8%3D&reserved=0) for all the details * Azure Files * SDKs * Storage Accounts * Features * SDK and Tools * [ Storage Accounts](https://azure.microsoft.com/en-gb/services/storage/)