[DO NOT MERGE] Update Security String to 2017-06-01 for nyc-dev am: d9a5e99599 am: 518f3b9283 am: c347cb4986  -s ours am: 5958603884  -s ours am: 752ed1efb9  -s ours am: 63750aafe0  -s ours
am: 8dd56abe81  -s ours

Change-Id: Icc7d8e144ac781da1db861071797e0c0fd313a6c