Add janitors to the OWNERS file

Test: TreeHugger
Change-Id: I8cb2395ca635cfb80f1c75e5c6ad280e5301e981
diff --git a/OWNERS b/OWNERS
index b5d6d93..8acbfac 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,3 +1,4 @@
 cferris@google.com
 dvdli@google.com
 elaurent@google.com
+include platform/system/core:/janitors/OWNERS #{LAST_RESORT_SUGGESTION}