Generate 1.7 changelog

Signed-off-by: Bridget McErlean <bmcerlean@vmware.com>

changelogs/unreleased/3990-reasonerjt

-Bump up Go to 1.16
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changelogs/unreleased/3993-mahaupt

-Fix restic error when volume is emptyDir and Pod not running

changelogs/unreleased/3996-ywk253100

-Select the velero deployment with both label and container name
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changelogs/unreleased/4007-ywk253100

-Wait for the namespace to be deleted before removing the CRDs during uninstall. This deprecates the `--wait` flag of the `uninstall` command
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changelogs/unreleased/4015-zubron

-Use the cluster preferred CRD API version when polling for Velero CRD readiness.
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changelogs/unreleased/4022-reasonerjt

-Implement velero debug
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changelogs/unreleased/4026-sseago

-Distinguish between different unnamed node ports when preserving

changelogs/unreleased/4028-zubron

-Add a RestoreItemAction plugin (`velero.io/apiservice`) which skips the restore of any `APIService` which is managed by Kubernetes. These are identified using the `kube-aggregator.kubernetes.io/automanaged` label.
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changelogs/unreleased/4055-ywk253100

-Change the base image to distroless
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changelogs/unreleased/4057-codegold79

-Validate namespace in Velero backup create command

changelogs/unreleased/4064-kahirokunn

-Updated the version of velero/velero-plugin-for-aws version from v1.2.0 to v1.2.1

changelogs/unreleased/4076-zubron

-Skip the backup and restore of DownwardAPI volumes when using restic.
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changelogs/unreleased/4101-ywk253100

-Empty the "ClusterIPs" along with "ClusterIP" when "ClusterIP" isn't "None"
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