Updating Security String to 2017-01-05 on mnc-dev

b/32949407

(cherry picked from commit 5e46dc22159f9691206a49369ca586e1e8eaaec0)
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 65bbf74..5d5bae6 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -105,7 +105,7 @@
   #  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 := 2017-01-01
+  PLATFORM_SECURITY_PATCH := 2017-01-05
 endif
 
 ifeq "" "$(PLATFORM_BASE_OS)"