fix permissions required for NTH Queue Processor

[haugenj]

There were more missing permissions for NTH Queue Processor for deleting/updating the resources. Perhaps at this point it would be reasonable to grant full access to sqs and eventbridge, similar to how the other kops user permissions are configured?

Additionally I noticed a small error when deleting EventBridge rules that had already had their targets removed, so that check is included in here. I can split it into a different pr if that's the preference

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[rifelpet]

I think what you have here is good for now 👍🏻
I was hoping to eventually do add a doc on "least permissive IAM policy required for a cluster" complete with conditionals for cluster name tags on applicable resources, perhaps we can do a bigger overhaul on documented IAM permissions then

[k8s-ci-robot]

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