Add documentation around targeting an aws instance.

  + add support for base64 encoded userdata

[#82521768]

Signed-off-by: Matthew McNew <mmcnew@pivotal.io>
detecting changes is a no op; promote and publish is manual

Signed-off-by: David Wadden <dwadden@pivotal.io>
Bump Version: 32 -> 33

        +Committed by GOCD- Run #437 of Pipeline: diego-edge , Stage: promote_and_publish, JOB: promote_and_publish