[DO NOT MERGE] Updating Security String to 2017-03-01 on lmp-dev

b/34345751

Change-Id: I001816a1f60aa4229b8fb96a96737bcebf416cef
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 30a17b7..e864d09 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -75,7 +75,7 @@
   # 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 := 2017-02-05
+  PLATFORM_SECURITY_PATCH := 2017-03-01
 endif
 
 ifeq "" "$(PLATFORM_BASE_OS)"