Add ability to filter catalog before running readiness test

[evevkovacs]

If you are submitting a PR for a validation test (either adding a new one or updating an existing one), please post a link to the DESCQA web interface for the test you are submitting.
This addition allows a filter to be applied to the catalog data before running the readiness tests. This was useful for testing the new baseDC2_5000 against the old catalog. baseDC2_5000 has a stellar-mass cut applied, which reduces the number of synthetic galaxies. I wanted to apply the same cut to the old baseDC2 catalog to do a comparison. The cosmic variance of the redshift distribution was of particular interest. Here's an example run for healpixel 9556

[yymao]

#202 should fix the linter issue.

[yymao]

Looks good to me. If it passes the new linter checks this can be merged.

[evevkovacs]

@yymao I wasn't sure how to trigger another run of the checks, so I made a trivial change in the code and pushed to the branch. As you can see the checks failed. But I failed to update from master, so let me try again. Hmm, git claims I am up to date, so sorry but I need help to get the updated checks to run on this branch.

[yymao]

I just merged #202 and update this branch. The checks are being rerun now.

[evevkovacs]

@yymao Ah, you hadn't pushed to master yet. OK, so now everything passed. Could you please re-approve, and then I will merge? Thanks, and sorry for my confusion. BTW, for future reference, how do I trigger a rerun of the checks without changing the code.

[yymao]

@evevkovacs I think if you go to the "Actions" tab, and then select the failing run, and then click "build (3.7)" from the left sidebar, and then you should see a "Re-run all jobs" button on the very right end.

[evevkovacs]

Thanks!