[automerger skipped] Upgrade bundletool to bundletool-20190905.Thu.07 RC0 am: 28ea6effc8 am: beb87ece01 am: d302f6275e
am: 7052f839a3 -s ours
am skip reason: SHA1 7052f839a3 skipped by user ccross

Change-Id: Icf2c65767e6125f83d12a502d454e2bbca8d0278