Allow test on Katib release branches

[andreyvelich]

Which issue is resolved by this Pull Request:
Related: kubeflow/katib#1774.

Description of your changes:
This PR allows tests on Katib release-0.13 branch

/assign @capri-xiyue @zijianjoy
/cc @gaocegege @johnugeorge

Checklist:

If PR related to Optional-Test-Infra,

• Changes need to be generated to aws/GitOps folder:
  1. cd aws
  2. make optional-generate
  3. make optional-test

[zijianjoy]

Will it make sense to use branches: ^master|release-.*$ ? So you don't need to create new PR every time.

[andreyvelich]

Will it make sense to use branches: ^master|release-.*$ ? So you don't need to create new PR every time.

That's great idea, do you know does prow support that syntax ?

[zijianjoy]

Taking a prow example from another repo: https://github.com/GoogleCloudPlatform/oss-test-infra/blob/master/prow/prowjobs/kubeflow/pipelines/kubeflow-pipelines-postsubmits.yaml#L6

[andreyvelich]

Taking a prow example from another repo: https://github.com/GoogleCloudPlatform/oss-test-infra/blob/master/prow/prowjobs/kubeflow/pipelines/kubeflow-pipelines-postsubmits.yaml#L6

That makes sense, thanks!
I've made changes.

[zijianjoy]

/lgtm
/approve

[google-oss-prow]

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