KEP-4222: Add unit tests for decoding CBOR into interface{} type

[benluddy]

What type of PR is this?

/kind cleanup
/sig api-machinery

What this PR does / why we need it:

Existing code assumes that decoding into Unstructured produces a map[string]interface{} containing values that are either interface{}(nil) or have one of the dynamic types bool, string, int64, float64, []interface{}, or map[string]interface{}. The same assumption applies recursively to any []interface{} or map[string]interface{}.

This PR adds tests that cover unmarshaling a wide range of potential CBOR inputs into interface{}.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

This continues the work started by @ssuriyan7 in #123546.

Does this PR introduce a user-facing change?

NONE

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

- [KEP]: https://kep.k8s.io/4222

[deads2k]

the organization helps

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 83c428131c156cefbcbbf6640bfb79b43e8d6d32

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: benluddy, deads2k

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• staging/src/k8s.io/apimachinery/pkg/OWNERS [deads2k]

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[benluddy]

/retest-required

[k8s-ci-robot]

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

Test name	Commit	Details	Required	Rerun command
pull-kubernetes-e2e-gce	3a097f2	link	unknown	/test pull-kubernetes-e2e-gce

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[benluddy]

/retest-required

[seans3]

/triage accepted