Migrate eks code to AWS SDK v2

[nrb]

Update calls in the following packages and files. Note that this is not necessarily an exhaustive list.

./cmd/clusterawsadm/cmd/eks/eks.go
./bootstrap/eks/api/v1beta2/eksconfigtemplate_types.go
./bootstrap/eks/api/v1beta2/eksconfig_webhook.go
./bootstrap/eks/api/v1beta2/eksconfig_types.go
./bootstrap/eks/api/v1beta2/eksconfigtemplate_webhook.go
./bootstrap/eks/api/v1beta1/eksconfigtemplate_types.go
./bootstrap/eks/api/v1beta1/eksconfig_types.go
./bootstrap/eks/controllers/eksconfig_controller_test.go
./bootstrap/eks/controllers/eksconfig_controller_reconciler_test.go
./bootstrap/eks/controllers/eksconfig_controller.go
./controlplane/eks
./pkg/eks
./pkg/eks/eks.go
./pkg/cloud/converters/eks.go
./pkg/cloud/services/eks
./pkg/cloud/services/eks/eks.go
./pkg/cloud/services/eks/mock_eksiface
./pkg/cloud/services/eks/mock_eksiface/eksapi_mock.go

[damdo]

See examples on how to migrate here: #5389

[damdo]

/assign @punkwalker

[k8s-ci-robot]

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In response to this:

/assign @punkwalker

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[damdo]

PR here: #5498

[richardcase]

/assign punkwalker
/lifecycle active

[k8s-ci-robot]

@richardcase: GitHub didn't allow me to assign the following users: punkwalker.

Note that only kubernetes-sigs members with read permissions, repo collaborators and people who have commented on this issue/PR can be assigned. Additionally, issues/PRs can only have 10 assignees at the same time.
For more information please see the contributor guide

In response to this:

/assign punkwalker
/lifecycle active

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-sigs/prow repository.