DO NOT MERGE : Update Security String to 2017-05-01 on lmp-dev am: e0b38c6277  -s ours am: 637f66925f am: 3481be638f  -s ours am: d4f9e95f7c am: 6962385144 am: 128b958afb am: 43cbfe0486  -s ours am: 0086be3401 am: 6af2006770 am: ea8a508c66 am: df19005be4 am: 78ebeb3018
am: 1c41a3694e  -s ours

Change-Id: I78321a852b06276f97cf47f302fd0a1d5bc26ca4