[DO NOT MERGE] Update LMP Security string to 2017-12-01 Bug: 67774760 am: 804540a3a7  -s ours am: dc25041602  -s ours am: 4e4fedefd6 am: 4739b13afb am: 81a4c67d31
am: 1a5eaff412  -s ours

Change-Id: I53a94f7db7ea089e58b3dfaf087a2185e0e99807