feat(GH): add check on operator image

[zdtsw]

Issue link

to prevent PR with new image gets merged and cause other parties falling their daily tasks.

What changes have been made

Verification steps

Checks

• I've made sure the tests are passing.
• Testing Strategy
  • Unit tests
  • Manual tests
  • Testing is not required for this change

[openshift-ci]

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[astefanutti]

/lgtm

Thanks!

[astefanutti]

@sutaakar WDYT?

[sutaakar]

I am considering better solution which will trigger image build automatically for a push event in ODH CFO repo.
Will create a PR today.

[sutaakar]

This PR is replaced by opendatahub-io#53 , which was pushed directly into the repository.
Closing this PR.