Update existing SNS scenarios

[Laren-AWS]

There are currently four SNS scenarios published in the SNS dev guide.

All of these scenarios are for Java v1 and must be updated. They are all cross-referenced from within the SNS guide, so we must either update them to new versions or work with the writer to deprecate and eventually remove them.

For the ones we want to keep and update, we should also add versions for more languages.

[scmacdon]

Lets schedule this work for next Sprint