Add support for No DB release

[khrm]

This add support for release_base.yaml which doesn't include db.

Changes

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Release Notes

NONE

[khrm]

/kind misc

[khrm]

/release-note-none

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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[khrm]

/cherry-pick release-v0.9.x

[tekton-robot]

@khrm: new pull request created: #705

In response to [this](https://github.com/tektoncd/results/pull/697#issuecomment-1931340043): >/cherry-pick release-v0.9.x Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.