CodeGen from PR 20426 in Azure/azure-rest-api-specs

[Hub Generated] Review request for Microsoft.AzureStackHCI to add version stable/2022-09-01 (#20426)

* Adds base for updating Microsoft.AzureStackHCI from version stable/2022-05-01 to version 2022-09-01

* Updates readme

* Updates API version in new specs and examples

* Add Software Assurance API and properties

1)Add Enable Software Assurance Benefit API
2)Add SoftwareAssurance Properties in the Cluster
3)Add NodeType in the ClusterNode
4)Add OSDisplayVersion in the properties

* Add read registeredSubscriptions permission in the list of operations

* Fix Validation Failures

* Address review comments

Co-authored-by: Mark Cowlishaw <[email protected]>