Merge "[DO NOT MERGE] Updating Security String to 2017-09-01 Bug:63846344" into lmp-dev am: 788d85f5ae  -s ours am: c0d2cfb8b8 am: 214aeaefef  -s ours am: 451a9d73bf am: d3789031c9 am: 35f0f8df33
am: f01d7163e8  -s ours

Change-Id: I79a827a4da9f2822a1abe972c20f243fee1768db