Some names can include commas, and if they're not surrounded by quotes,
then CSV parsing breaks, as was the case in
https://github.com/google/battery-historian/issues/94#issuecomment-282790498
and several other circumstances.
Test: flashed local device and ran batterystats output through Historian
Change-Id: I070c5d873d9f79996a581bf0a5f664136c0af454