provider/aws: Fix flattened cloudfront lambda function associations t…

[jakepusateri]

…o be a set, not a slice

Fixes #11925

[pxlpnk]

Is there a plan to get this merged?

[majormoses]

@stack72 any chance of getting this looked at?

[stack72]

LGTM! Thanks for the work here - sorry it took so long to merge!

Paul

[s-nakka]

https://www.terraform.io/docs/providers/aws/r/lambda_event_source_mapping.html
This document says "The event source ARN - can either be a Kinesis or DynamoDB stream". I don't see an option to attach cloudfront as a source trigger to lambda (edge). Using Terraform v0.9.3.

[elblivion]

@SandyFox IIUC you have to set it in Cloudfront, not as a regular event source mapping: https://www.terraform.io/docs/providers/aws/r/cloudfront_distribution.html#lambda_function_association

[s-nakka]

Great thank you, but It would be nice to control it from lambda too. When there is an option in the console I believe it should be in CLI too.

[ghost]

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