CodeGen from PR 16659 in Azure/azure-rest-api-specs

[SRP] Add "2021-08-01" API version (#16659)

* Copy the spec from 2021-06-01 to 2021-08-01

* Apply the API and property changes in 2021-08-01

* Fix format

* Update readme and add tag 2021-08

* Add isLocalUserEnabled and isSftpEnabled properties; add examples for ActiveDirectoryProperties

* Fix missing bracket and format issue; add required properties for permissionScopes

* Create readme.python.md

* Remove unreferenced file

* Add explicit type:object

* Add default responses and system data field

* Fix example of Create Local User

* Update descriptions

* Remove secret tag

* Revert "Remove secret tag"

This reverts commit 45b1c7b6b82998b4f470615efd2c5d453cd6f4b7.

* Update LocalUserCreate.json

* Update the local user properties definition

* fix readme

* apply #17027 to this PR

Co-authored-by: Yuchao Yan <[email protected]>
Co-authored-by: Arcturus Zhang <[email protected]>

Author: 3 people