Update copyrights for 2020

[johngmyers]

No description provided.

[k8s-ci-robot]

Hi @johngmyers. Thanks for your PR.

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[tanjunchen]

/ok-to-test
why not consider update all copyright?

[johngmyers]

I don't understand the question. This is the result of make apimachinery, needed for anything to pass CI.

[tanjunchen]

I don't understand the question. This is the result of make apimachinery, needed for anything to pass CI.

ok i get it

[johngmyers]

/test pull-kops-e2e-kubernetes-aws

[rifelpet]

/approve
/lgtm

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: johngmyers, rifelpet

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[hakman]

@johngmyers I think this should go also to 1.15. I bet there would be at least one more release for it soon.