WAF integration

[eserkaraca]

Hello,

First of all thank you for this functional serverless plugin. But i think there is a missing point which should be urgently added.

As a best practice if you create a public CloudFront distrubution, you should attach a WAF ACL to it in order to protect your public domain url. And as we have experienced similar to that we have attached WAF to all our CloudFront distributions. I think it will be same for most of the users.

It will be great for everyone if you add web_acl_id attribute to CloudFront distribution in order to make proper connection.

Thanks,
Eser