changed approach - now all audits are run from a single instance in the eaarch account. This is done via orchestrate-audit. create_instance has now been deprecated.
runallaudits is passed to the instance created in eaarch as userdata. It downloads runaudit.sh and then runs all of the audits, based on what's in the DynamoDB table.
moved all account logic to the orchestrate-audit script. runallaudits now runs on any accounts listed in
the dynamodb table.