CodeGen from PR 21158 in Azure/azure-rest-api-specs

[Hub Generated] Review request for Microsoft.ContainerInstance to add version stable/2022-09-01 (#21158)

* Adds base for updating Microsoft.ContainerInstance from version stable/2021-10-01 to version 2022-09-01

* Updates readme

* Updates API version in new specs and examples

* Adding a new property 'identity' to EncryptionProperties

* Including retry timeout minutes as part of same api version update

* Fixing SpellCheck error

* added Extensions property to swagger spec

* add x-ms-identifier; fix spellings

* remove retryTimeoutMinutes from spec

* use correct nesting for extension properties

* extension required properties

* added contianer group extension example

* add reference to extensions example

* added example for contianer group encryptionProperties

* fix errors in example schema

* added LRO headery azure-asyncoperation to examples

Co-authored-by: Sandeep Prakash <[email protected]>
Co-authored-by: Sandeep Prakash <[email protected]>

Author: SDKAuto