Replace GroupKind with GroupVersionKind in ResourceDescriptor

[RedbackThomson]

Description of changes:
Replace GroupKind with GroupVersionKind, in ResourceDescriptor, which returns a static GVK using already-defined fields.

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[ack-prow]

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

Test name	Commit	Details	Required	Rerun command
ec2-controller-test	eb94afe	link	true	/test ec2-controller-test
apigatewayv2-controller-test	eb94afe	link	true	/test apigatewayv2-controller-test
s3-controller-test	eb94afe	link	true	/test s3-controller-test
dynamodb-controller-test	eb94afe	link	true	/test dynamodb-controller-test
iam-controller-test	eb94afe	link	true	/test iam-controller-test
ecr-controller-test	eb94afe	link	true	/test ecr-controller-test
lambda-controller-test	eb94afe	link	true	/test lambda-controller-test

Full PR test history. Your PR dashboard.

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[ack-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: A-Hilaly, RedbackThomson

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