fix: remove set nodes role

[faiq]

What type of PR is this?
/kind bug

What this PR does / why we need it:
removes the node role arn lookup automatically being added on to the iamconfig.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #4291

Special notes for your reviewer:

Checklist:

• squashed commits
• includes documentation
• adds unit tests
• adds or updates e2e tests

Release note:

removes always adding nodes role to iamauth config for EKS clusters 

[faiq]

/test ?

[k8s-ci-robot]

@faiq: The following commands are available to trigger required jobs:

• /test pull-cluster-api-provider-aws-build
• /test pull-cluster-api-provider-aws-test
• /test pull-cluster-api-provider-aws-verify

The following commands are available to trigger optional jobs:

• /test pull-cluster-api-provider-aws-apidiff-main
• /test pull-cluster-api-provider-aws-e2e
• /test pull-cluster-api-provider-aws-e2e-blocking
• /test pull-cluster-api-provider-aws-e2e-clusterclass
• /test pull-cluster-api-provider-aws-e2e-conformance
• /test pull-cluster-api-provider-aws-e2e-conformance-with-ci-artifacts
• /test pull-cluster-api-provider-aws-e2e-eks
• /test pull-cluster-api-provider-aws-e2e-eks-gc
• /test pull-cluster-api-provider-aws-e2e-eks-testing

Use /test all to run the following jobs that were automatically triggered:

• pull-cluster-api-provider-aws-apidiff-main
• pull-cluster-api-provider-aws-build
• pull-cluster-api-provider-aws-test
• pull-cluster-api-provider-aws-verify

In response to this:

/test ?

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[faiq]

/test pull-cluster-api-provider-aws-e2e-eks

[faiq]

/test pull-cluster-api-provider-aws-e2e-eks-gc

[faiq]

/test pull-cluster-api-provider-aws-e2e-eks

[faiq]

/test pull-cluster-api-provider-aws-e2e-eks

[faiq]

/test pull-cluster-api-provider-aws-e2e-eks-gc

[Skarlso]

@faiq Seems like this looks good?

[faiq]

Yep, looks ready to me

[Skarlso]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Skarlso

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• OWNERS [Skarlso]

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[richardcase]

/cherrypick release-2.1

[k8s-infra-cherrypick-robot]

@richardcase: new pull request created: #4307

In response to this:

/cherrypick release-2.1

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[Ankitasw]

/cherrypick release-2.0

[k8s-infra-cherrypick-robot]

@Ankitasw: #4292 failed to apply on top of branch "release-2.0":

Applying: fix: remove set nodes role
Using index info to reconstruct a base tree...
M	pkg/cloud/services/iamauth/reconcile.go
Falling back to patching base and 3-way merge...
Auto-merging pkg/cloud/services/iamauth/reconcile.go
CONFLICT (content): Merge conflict in pkg/cloud/services/iamauth/reconcile.go
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0001 fix: remove set nodes role
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

In response to this:

/cherrypick release-2.0

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.