Updating security string to 2016-09-05 in preparation for 2016 September OTA...
Updating security string to 2016-09-05 in preparation for 2016 September OTA for b/30224278 am: a234c54e am: 48e360c7 am: a08cbbb9
am: a9645552
Change-Id: I019d3216bafbbba0158ddd9ff93f0d8edbd7c40c