[DO NOT MERGE] Updating Security String to 2017-08-05 on nyc-dev bug:62388772 am: 2b93753bc4 am: 8828ffc63e am: edda32c5e3
am: 4f43543b11

Change-Id: I4efeaa885f6d5a7e7d09d69c4b6627be1fe71a52