Add test to verify empty bundles in addition does not break

[shawn-hurley]

Description of the change:
Test to verify the behavior of adding an empty list of bundles

Motivation for the change:
Prevent backwards incompatible changes.

Reviewer Checklist

• Implementation matches the proposed design, or proposal is updated to match implementation
• Sufficient unit test coverage
• Sufficient end-to-end test coverage
• Docs updated or added to /docs
• Commit messages sensible and descriptive

[kevinrizza]

/approve

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kevinrizza, shawn-hurley

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[njhale]

/lgtm

tide should just be waiting for a merge window now

[shawn-hurley]

@ecordell can you override with valid bug? I believe the change is just a test change and is needed to make sure that we don't break pipeline functionality

[ecordell]

this a safe, test-only change, marking with valid-bug