jenkins plugin question

Hi.

I've got add few more parameters to OsmoBTS and OsmoPCU gerrit jobs in jenkins. So far this has been done by manually adding parameter axis and writing combination filter for axis parameters. It's error prone and rather ugly. Much better way would be to use JobDSL and declare entire job programmatically but until that happens there's nice intermediate solution:

https://plugins.jenkins.io/matrix-combinations-parameter

I'd like to install this plugin onto our jenkins and convert above mentioned jobs to use it. Opinions, other ideas?

On a related note: who's responsible for jenkins config/update? Shall I just contact that person directly if I need some plugin in jenkins, or shall I ask in ML?