Changes to List VM pricing plans

added the new cost_optimized enum value to the plans/items/vm_type response property for the response status 200

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

added the new windows enum value to the plans/items/vm_type response property for the response status 200

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

added the optional property plans/items/out_of_stock to the response with the 200 status

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

the response property plans/items/memory_gib became required for the status 200

the response property plans/items/monthly_price became required for the status 200

the response property plans/items/price_per_hour became required for the status 200

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

the response property plans/items/ssd_gib became required for the status 200

the response property plans/items/transfer_gib became required for the status 200

the response property plans/items/twenty_four_month_price became required for the status 200

the response property plans/items/vcpu became required for the status 200

the response property plans/items/vm_type became required for the status 200

the response property plans/items/yearly_price became required for the status 200

endpoint added