Onboarding applicationWhitelistings to a new stable API version - 202…

…0-01-01 (#8639)

* copy applicationWhitelistings API to new api-version

* change applicationWhitelistings API-version to the new stable one

* make the GET and PUT objects the same (and add readonly to some fields)

* try fix model validation by adding required fields

* changing the parameter from definitions to parameters

* adding the AppWhitelistingGroup to parameters as well and referencing the definition

* try change sub id

* remove readonly properties from PUT

* remove duplicate APIs from package composite

Co-authored-by: erelh <erelh@microsoft.com>