feat(helm): refactoring Kubernetes recommanded labels

[nlamirault]

• Support all Kubernetes recommended labels
• Refactoring using template helper.
• Support for additional labels which can be add to all resources
• Change labelSelector into metrics-service to use the same of the deployment.

See also: aws-controllers-k8s/s3-controller#175

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

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[ack-prow]

Hi @nlamirault. Thanks for your PR.

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