Changes to List OS templates

added the optional property data/items/licence_price_per_month to the response with the 200 status

added the new enum value cost_optimized to the query request parameter vm_type

added the new enum value windows to the query request parameter vm_type

the response property data/items/category became required for the status 200

the response property data/items/cpu became required for the status 200

the response property data/items/id became required for the status 200

the response property data/items/is_windows became required for the status 200

the response property data/items/name became required for the status 200

the response property data/items/os_type became required for the status 200

the response property data/items/ram became required for the status 200

the response property data/items/region became required for the status 200

the response property data/items/storage became required for the status 200

the response property data/items/version became required for the status 200

endpoint added