spike: external dns remove iam from eks cluster module

[jarededwards]

leverage an app of app to reduce the requirements of creating an eks cluster with kubefirst. starting point for discussion

└── registry
    └── mgmt
        └── components
            └── external-dns
                ├── application.yaml
                ├── components
                │   ├── application.yaml
                │   ├── post.yaml
                │   └── pre.yaml
                ├── post.yaml
                └── pre.yaml

[linear]

KRA-53 spike: external dns remove iam from eks cluster module