[Hub Generated] Review request for Microsoft.AzureStackHCI to add version preview/2022-12-15-preview (#23230)

* Adds base for updating Microsoft.AzureStackHCI from version preview/2021-09-01-preview to version 2022-12-15-preview

* Updates readme

* Updates API version in new specs and examples

* 2022-12-15-preview changes from RPSaaSMaster

* update readme

* add vhdx

* backport changes from Azure/azure-rest-api-specs-pr#12162

* Remove response schema from patch 202 response

* update patch example

---------

Co-authored-by: Patricia Huang <pathuang@pathuang-dev>

Author: pathuang-sia

custom-words.txt

@@ -2394,6 +2394,7 @@ versionid
 Vertica
 Vfyc
 vhds
+vhdx
 videosearch
 viewp
 vippool