Specify the default values in the RAML files

[mvantellingen]

The ProductChangeSlugUpdateAction for example has the staged attribute. This should be set by default to False. I quickly read through the raml specs again and it seems it support defining default values using default? property

Would be great if this can be done

[stmeissner]

@mvantellingen Like for the ProductChangeSlugUpdateAction we have added the default values for optional properties in the meanwhile. Is it what you were asking for?