DO NOT MERGE : Update Security String to 2017-05-05 on lmp-dev am: baf29229ca  -s ours am: 9921f826fe am: 88ba3a3bf8  -s ours am: fc869b58e8 am: 959da97bba am: 7f4fbb79ac am: 9754351b7c  -s ours am: f727c7433b
am: 9525d910c7

Change-Id: I6ec6d1a4ec1a5767cce371d3dbbc7828ae4b3a8f