Allow specifying prefix lists by names

[artem-nefedov]

Describe the feature you are requesting

Ability to specify prefix lists by names rather than IDs.

Motivation

aws-load-balancer-security-group-prefix-lists service annotation expects you to provide prefix list IDs. This is rather inconvenient and makes us do custom-script preprocessing to convert prefix list names into IDs first. It would be much simpler if we can specify prefix list names directly.

Describe the proposed solution you'd like

New service annotation (e.g. aws-load-balancer-security-group-prefix-list-names) that accepts comma-separated list of prefix lists. Controller does the logic of looking up the names and converting them to IDs internally. IAM permissions are updated accordingly, if needed.

Accepting names in already existing annotation is also an option, as it will match the behaviour of security group annotation:

Both name and ID of securityGroups are supported. Name matches a Name tag, not the groupName attribute.

Example

service.beta.kubernetes.io/aws-load-balancer-security-groups: sg-xxxx, nameOfSg1, nameOfSg2

Describe alternatives you've considered

N/A

Contribution Intention (Optional)

-[ ] Yes, I am willing to contribute a PR to implement this feature
-[x] No, I cannot work on a PR at this time

[sarevalo2002]

That sounds like a reasonable ask! This is a good first issue, and we welcome community contribution for it.

[LucaLanziani]

/assign

[LucaLanziani]

I think I'm leaning towards having a new annotation more than overloading the existing one

[LucaLanziani]

Is there a way to test this locally with Localstack? I have some changes ready and I would like to test them without having to setup a full AWS account and EKS cluster.