Removed dependency on node annotation in favor of CSINode resource

[Danil-Grigorev]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

CSINode is in all supported Kubernetes releases, so no more Node annotation is required.

Which issue(s) this PR fixes:

Fixes #203

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Removed usage of annotation csi.volume.kubernetes.io/nodeid on Node objects. The external-attacher now requires Kubernetes 1.14 with feature gate CSINodeInfo enabled.

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[k8s-ci-robot]

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[k8s-ci-robot]

Hi @Danil-Grigorev. Thanks for your PR.

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[msau42]

Thanks for the PR! Can you work on resolving the CLA issues?

[msau42]

Can we also remove Node rbac permissions from https://github.com/kubernetes-csi/external-attacher/blob/master/deploy/kubernetes/rbac.yaml?

[msau42]

Nm looks like CLA issue has been resolved

/ok-to-test

[jsafrane]

@Danil-Grigorev, thanks for the PR. Can you please edit the release note in the first comment? This is a change visible to user and they should be warned.

Something like:
Removed usage of annotation csi.volume.kubernetes.io/nodeid on Node objects. The external-attacher now requires Kubernetes 1.14 with feature gate CSINodeInfo enabled.

[jsafrane]

/lgtm
/approve

Thanks for your PR!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Danil-Grigorev, jsafrane

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