[Do Not Merge] Update Security String to 2017-11-01 on nyc-dev bug:65631379 am: 6f224a7615 am: cbe21a52c8 am: 8d7c08cafd am: 86e0337fda
am: 6b626cb4c6  -s ours

Change-Id: I5ec186bddfd6e2d5a2acae973392f2cf2d44b87b