This check monitors the AWS/CloudFront distributions.
To make this check work you have to configure the related
Amazon Web Services (AWS).
You can monitor Requests, Bytes downloaded, Bytes uploaded,
Total error rate, 4xx error rate and 5xx error rate.
There are no default levels for the above metrics but you can specify
them on the "AWS/CloudFront" rule.
ID of the CloudFront distribution.
One service is created for each CloudFront distribution.