Fixed build.sh to fail on linter error.
Fixed build.sh to fail on linter error.

Change-Id: I50e922b488f05c95138dddda354843020ebddf9a
Reviewed-on: https://robertou.com/gerrit/97
Tested-by: Jenkins CI
Reviewed-by: Robert Ou <6265f2953535a346b7ba7418c552b02d288905ed@pioneers.berkeley.edu>

abhishyantkhare/tenshi,jarzofjam/tenshi,jarzofjam/tenshi,tobinsarah/tenshi,chuen0630/tenshi,pioneers/tenshi,zentner-kyle/tenshi-old,SamboyKirk/tenshi,jarzofjam/tenshi,chuen0630/tenshi,jessicakam/tenshi,abhishyantkhare/tenshi,JaronArmiger/tenshi,pioneers/tenshi,jessicakam/tenshi,abhishyantkhare/tenshi,cduck/tenshi,pioneers/tenshi,zentner-kyle/tenshi-old,chuen0630/tenshi,tobinsarah/tenshi,jessicakam/tenshi,hozhu123/tenshi,zentner-kyle/tenshi-old,pioneers/tenshi,SamboyKirk/tenshi,chuen0630/tenshi,zentner-kyle/tenshi-old,chuen0630/tenshi,chuen0630/tenshi,cduck/tenshi,zentner-kyle/tenshi-old,jarzofjam/tenshi,jessicakam/tenshi,SamboyKirk/tenshi,pioneers/tenshi,SamboyKirk/tenshi,jessicakam/tenshi,hozhu123/tenshi,tobinsarah/tenshi,hozhu123/tenshi,JaronArmiger/tenshi,SamboyKirk/tenshi,cduck/tenshi,cduck/tenshi,abhishyantkhare/tenshi,JaronArmiger/tenshi,pioneers/tenshi,hozhu123/tenshi,JaronArmiger/tenshi,tobinsarah/tenshi,abhishyantkhare/tenshi,tobinsarah/tenshi,chuen0630/tenshi,hozhu123/tenshi,SamboyKirk/tenshi,jarzofjam/tenshi,jarzofjam/tenshi,hozhu123/tenshi,JaronArmiger/tenshi,pioneers/tenshi,jessicakam/tenshi,hozhu123/tenshi,JaronArmiger/tenshi,tobinsarah/tenshi,SamboyKirk/tenshi,jarzofjam/tenshi,abhishyantkhare/tenshi,tobinsarah/tenshi,cduck/tenshi,cduck/tenshi,JaronArmiger/tenshi,cduck/tenshi,zentner-kyle/tenshi-old,abhishyantkhare/tenshi,jessicakam/tenshi