Use for Updating OC-release branches to 12-01 after KRACK fix.
(cherry picked from commit 43f4cb8d492c7c74fc2a30c8543fcc307552b3e0)

Change-Id: Id938ee1bafff56c0fae85ea9c3a42da5d5f4c616
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 636d9e3..420d8b1 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -165,7 +165,7 @@
     #  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 := 2017-11-06
+      PLATFORM_SECURITY_PATCH := 2017-12-01
 endif
 
 ifndef PLATFORM_BASE_OS