Associates an alias (also known as a CNAME or an alternate domain name) with a CloudFront distribution.
See https://paws-r.github.io/docs/cloudfront/associate_alias.html for full documentation.
cloudfront_associate_alias(TargetDistributionId, Alias)
[required] The ID of the distribution that you’re associating the alias with.
[required] The alias (also known as a CNAME) to add to the target distribution.