suppress su behavior when running lsof

Relevant error logs show up when dumpstate do lsof using su identity:
RunCommand("LIST OF OPEN FILES", {"lsof"}, CommandOptions::AS_ROOT);

This is an intended behavior and the log is useless for debugging so I
suppress them.

Bug: 225767289
Test: do bugreport with no su related avc errors
Change-Id: I0f322cfc8a461da9ffb17f7493c6bbdc58cce7b6
diff --git a/public/su.te b/public/su.te
index be02672..8328140 100644
--- a/public/su.te
+++ b/public/su.te
@@ -22,6 +22,7 @@
   dontaudit su kernel:security *;
   dontaudit su { kernel file_type }:system *;
   dontaudit su self:memprotect *;
+  dontaudit su domain:anon_inode *;
   dontaudit su domain:{ process process2 } *;
   dontaudit su domain:fd *;
   dontaudit su domain:dir *;