[1.2.x] feat: add the scaffolder relation processor plugin

[openshift-cherrypick-robot]

This is an automated cherry-pick of #1299

/assign schultzp2020

[openshift-ci]

Hi @openshift-cherrypick-robot. Thanks for your PR.

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[sonarcloud]

Quality Gate passed

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0 New issues
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See analysis details on SonarCloud

[schultzp2020]

/approve
/lgtm

[openshift-ci]

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This pull-request has been approved by: schultzp2020

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[github-actions]

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