Update Security String to 2017-02-01 in klp-dev am: b1a7ec0841 am: 5c99964c63 am: ce2b665128  -s ours am: 2c827418dd am: 380ba6deec am: 9baf1b5294 am: 34eec6554f
am: 647c853775

Change-Id: I69c99baaad95aacdc154f1db7d5960e6242cb28c