Update zero result return to be non-error inducing #695
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Checklist
- [ ] A PR is opened to update the documentation on https://github.com/kedacore/keda-docs- [ ] Tests have been addedOpen to adding unit tests for the prometheus scaler, but I'm assuming that's better done as a separate dedicated work item rather than shoving it into the scope of this fix? There were tests for the scaler already, but they were just for metadata validation and not for any functionality.
Fixes #657