CodeGen from PR 18070 in Azure/azure-rest-api-specs

SRP Swagger Updates for Sep21 [2021-09-01] Api Version GA (#18070)

* Full copy from 2021-08-01 to 2021-09-01 without any changes

* Updating API version for Service types, Updating readme files

* Feature: Premium Access Tier for PBB accounts, with example, prettier and validation check done.

* Feature: Add LastTierChangeTime LCM Action support, Added Examples, Ran Prettier and Validation check

* Feature: Add LCM BaseBlob daysAfterCreationTime actions with example

* Feature : Async Sku Conversion Status Object for Customer controlled Migration and SCGRS operations

* Feature: AllowPermanentDelete property to allow deletion for soft deleted versions and snapshotr

* Linting S360 - Enum Mismatch, https://portal.azure-devex-tools.com/amekpis/correctness/detail?errorId=A2DB3DB8-3A59-44C9-85C1-7C9C66AED0AD, https://portal.azure-devex-tools.com/amekpis/correctness/detail?errorId=A1CA6F05-42DC-4D72-A0D6-928FB6BEEC54

* S365 Swagger Linting, Blob Invnetory, Add destination container back at policy level with deprecated comment.

* Move SignedIdentifiers to Common.json, Add SI to Table, Add Examples, Run prettier check and validation

* update the api version for the test

* S365: Return CMK version expiration time with example, Return TenantID for UA Identities, Update existing Example

* Feature: DnsEndpointType For Account Level PDNS

* SpellCheck, Move Location header to 202 response for existing example (CI CD check failure)

* Feature: Add ExcludePrefix, IncludeDeleted and Additional Scheams for BlobInventory.

* remove asunc location header from example, latest model validation requires it to be removed

* Account PDNS Updates Change AzureDnsZone type, Address comment for allowPermanentDelete

* update the description and x-ms-clientname for currentCmkVersion

* Update the Description for the DnsEndpointType.

* Add input parameter to the Table API

* Create separate definition for Table Signed Identifiers, Update Tests

* Feature: Change daysAfterLastTierChangeTimeGreaterThan To daysAfterLastTierChangeGreaterThan

* Add type=object and description for TableAccessPolicy, Update descriptions, Add the Async header back to the example.

* Spell correction for file shares

* Updating descriptions

* Remove tenantId from the UAI

* Change Header to Headers for failing check