currently we upsert measurements for all bundles when processing a single bundle, for example:
this commit has a bundle_analysis_report with 3 bundles (B1, B2, B3), when processing B1, we should only upsert measurements for B1, instead we currently do it for B1, B2, B3. The correctness is the same, but its doing extra work for nothing and taking longer that it should and more traffic

the change would be for the processor to return the bundle name that was processed and pass it to the save measurements task so it will only do it for this bundle name