[addon/external-dns] update irsa policy

[Hokwang]

What does this PR do?

current policy occurs error in external-dns when user has hosted zone more than 2.
and refer to official document (https://kubernetes-sigs.github.io/external-dns/v0.12.1/tutorials/aws/#iam-policy) , follow the policy guide.

Motivation

before fix

time="2022-07-26T07:44:34Z" level=error msg="failed to list resource records sets for zone /hostedzone/Z0098938DV62NKCC892B: AccessDenied: User: arn:aws:sts::88425xxxxxxx:assumed-role/eks-external-dns-sa-irsa/1658820563382445612 is not authorized to perform: route53:ListResourceRecordSets on resource: arn:aws:route53:::hostedzone/Z0098938DV62xxxxxxxx because no identity-based policy allows the route53:ListResourceRecordSets action\n\tstatus code: 403, request id: cdb13f18-51ba-490b-a0fe-8c21"

after apply fix

time="2022-07-26T07:46:36Z" level=info msg="Applying provider record filter for domains: [xxxx.com. .xxxx.com. xxxxx.io. .xxxxx.io. a.com. .a.com. b.com. .b.com.]"
time="2022-07-26T07:46:37Z" level=info msg="Desired change: CREATE cname-n.a.com TXT [Id: /hostedzone/Z0004878N3Yxxxx]"

More

• Yes, I have tested the PR using my local account setup (Provide any test evidence report under Additional Notes)
• Yes, I have added a new example under examples to support my PR
• Yes, I have created another PR for add-ons under add-ons repo (if applicable)
• Yes, I have updated the docs for this feature
• Yes, I ran pre-commit run -a with this PR

Note: Not all the PRs required examples and docs except a new pattern or add-on added.

For Moderators

• E2E Test successfully complete before merge?

Additional Notes

[vara-bonthu]

LGTM 👍🏼