Need a way to prioritize builds

[davkean]

It looks like there's a few plug-ins for prioritizing specific jobs (PR job vs rolling job), but there's none for prioritizing individual builds (Bob's build before Sam's).

@Petermarcu states:

Do you know if there is a way to prioritize certain items in the queue? We had a change that had to get into the build tonight blocked by this today and im sure many of the things it was behind weren't business critical. We ended up just merging without CI testing because it had to get into tonight's build.