[Halld-offline] Spring (B-field != 0) Data Pinned to cache disk

[Paul Mattione]

I've pinned all of the files from what I'm told are the "good" (B-field != 0) runs to the cache disk:

2931, 3079, 3179, 3180, 3182, 3185, 3186

They should stay there for the next 60 days.  

 - Paul