Create and use a new shared role in cloud-provider-aws CI jobs

[dims]

related to kubernetes/k8s.io#5194

[tzneal]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dims, tzneal

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• config/jobs/kubernetes/cloud-provider-aws/OWNERS [dims]

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[k8s-ci-robot]

@dims: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-test-infra-unit-test-race-detector-nonblocking	b5d0e24	link	false	/test pull-test-infra-unit-test-race-detector-nonblocking

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[dims]

/retest

[k8s-ci-robot]

@dims: Updated the job-config configmap in namespace default at cluster test-infra-trusted using the following files:

• key cloud-provider-aws-periodics.yaml using file config/jobs/kubernetes/cloud-provider-aws/cloud-provider-aws-periodics.yaml
• key cloud-provider-aws-presubmit.yaml using file config/jobs/kubernetes/cloud-provider-aws/cloud-provider-aws-presubmit.yaml

In response to this:

related to kubernetes/k8s.io#5194

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