Add janitors to the OWNERS file

Test: TreeHugger
Change-Id: I9fca3e35adce757ded26783bcdcc950691d13038
diff --git a/OWNERS b/OWNERS
index 8fac92c..1322c09 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,2 +1,3 @@
 [email protected]
 [email protected]
+include platform/system/core:/janitors/OWNERS #{LAST_RESORT_SUGGESTION}