Improve the SQuaSH API /kpms resource in order to be used in the characterization report

The SQuaSH API /kpms resource should return the information needed to feed the characterization report notebook template.

https://github.com/lsst-sqre/nbreport/blob/master/tests/TESTR-001/TESTR-001.ipynb

In particular user should query by Jenkins Job IDs which are more meaningful instead of SQuaSH internal Job IDs.