add legacy filter to image tag transformer

[Shell32-Natsu]

fix #2758

[k8s-ci-robot]

Hi @Shell32-Natsu. Thanks for your PR.

I'm waiting for a kubernetes-sigs 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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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Shell32-Natsu
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[Shell32-Natsu]

/assign @monopole

[monopole]

/ok-to-test

[monopole]

/lgtm