Add eks.amazonaws.com/role-arn annotation

[DmitryDodzin]

Add sa.roleArn value that maps to eks.amazonaws.com/role-arn annotation on service account.

relevant for metalbear-co/mirrord#2293.

[meowjesty]

👍

[t4lz]

When I ran this I got

An error occurred (NoSuchEntity) when calling the AttachRolePolicy operation: Policy arn:aws:iam::<redacted_by_t4lz>:policy/mirrord-operator-role does not exist or is not attachable.

So for my testing I just attached mirrorrd-operator-role to the preexisting AmazonSQSFullAccess policy (with ARN arn:aws:iam::aws:policy/AmazonSQSFullAccess). I don't know if that's a valid solution for our users as well, or if the limitation to a specific account id in our custom policy is important.

[aviramha]

@Razz4780 @DmitryDodzin @t4lz do we need this?

[Razz4780]

@Razz4780 @DmitryDodzin @t4lz do we need this?

Don't think so, I've seen arn role both in mirrord operator setup and in the new chart. @t4lz ? 👀

[DmitryDodzin]

@Razz4780 @DmitryDodzin @t4lz do we need this?

Well we can slim up the doc section because it's mostly copy-paste from aws-docs but the .Values.sa.roleArn can be useful in CI setting instead of introducing outside patch to link the arn

[t4lz]

I based #84 on this branch, so these commits are already merged (but I did change the README).
I am confused as to why the diff still shows stuff that's already in main.