[Feature Request] Custom clean up schedule (rate)

[afittz]

Would you be willing to accept a pull request to parameterize the schedule for invoking the Lambda function in your CloudFormation template that is currently hard coded to rate(1 hour)? (Template.yaml line 41)

The proposed change would be to add an optional parameter with the default of the current value (rate(1 hour)).

This would allow us to invoke it much less frequently for some scenarios where changes are less frequent.

[theburningmonk]

@afittz sure, that's a good idea, go ahead!