Enhance the support for reading Results and Records across multiple collections

[alan-ghelardi]

What

This pull request resolves #248, which
provides a more detailed explanation about the rationale. Essentially, these
changes allow users to list results across parents and list records across
results without a prior knowledge of the parent name.

[tekton-robot]

Hi @alan-ghelardi. Thanks for your PR.

I'm waiting for a tektoncd member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[dibyom]

/ok-to-test

[adambkaplan]

If we are going to use - to mean "all namespaces" for the parent, then we need to modify the RBAC auth check [1]. - is not a valid namespace, and the best case is that subject access review will fail with an invalid namespace. Worst case - it always succeeds, which would be a security vulnerability.

Ideally we would have an e2e test covering this. I feel that is too much to ask for in this PR.

[1] https://github.com/tektoncd/results/blob/main/pkg/api/server/v1alpha2/auth/rbac.go#L85-L94

[adambkaplan]

/approve

[vdemeester]

/lgtm

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: adambkaplan, vdemeester

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[alan-ghelardi]

@adambkaplan thank you for accepting the pull request. I started writing an E2E test case for that scenario, but I stumbled upon the mtls. I'm working on that and I send a new pull request once it's done.

[khrm]

/kind feature
We need this label for release as discussed in the last WG call.