Update Security String to 2017-04-01 on nyc-dev am: 93c1a722c2 am: b1865c4cac am: 4526457528
am: 03dc9a951a

Change-Id: Icbbad811a05d0812596b8b4678804fc1151a921b
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 01c425f..75a96f4 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -131,7 +131,7 @@
     #  It must be of the form "YYYY-MM-DD" on production devices.
     #  It must match one of the Android Security Patch Level strings of the Public Security Bulletins.
     #  If there is no $PLATFORM_SECURITY_PATCH set, keep it empty.
-      PLATFORM_SECURITY_PATCH := 2017-03-05
+      PLATFORM_SECURITY_PATCH := 2017-04-01
 endif
 
 ifeq "" "$(PLATFORM_BASE_OS)"