Add janitors to the OWNERS file

Test: TreeHugger
Change-Id: I0ff84d3591c92bfde2c547cf3c683094d3d7ee53
diff --git a/OWNERS b/OWNERS
index 6a44f69..b596c36 100644
--- a/OWNERS
+++ b/OWNERS
@@ -5,3 +5,4 @@
 [email protected]
 [email protected]
 [email protected]
+include platform/system/core:/janitors/OWNERS #{LAST_RESORT_SUGGESTION}