[release-v0.12.x] Pass Record name to the v1alpha3 API in tkn-results cli

[tekton-robot]

This is an automated cherry-pick of #818

/assign khrm

User can pass the record name in the below format to v1alpha3 GetLog :
<namespace>/results/<parent-run-uuid>/records/<child-run-uuid>

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: khrm

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/tektoncd/results/blob/release-v0.12.x/OWNERS)~~ [khrm] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[khrm]

/kind feature

[khrm]

/kind feature