Add janitors to the OWNERS file

Test: TreeHugger
Change-Id: I79ecce9e485540e02a8861786b19c98d64ae43c2
diff --git a/OWNERS b/OWNERS
index 5c05c2b..ad700d5 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,3 +1,4 @@
 # g/kleaf team
 elsk@google.com
 maennich@google.com
+include platform/system/core:/janitors/OWNERS #{LAST_RESORT_SUGGESTION}