Dontaudit denials caused by race with labeling.

These denials seem to be caused by a race with the process that labels
the files.  While we work on fixing them, hide the denials.

Bug: 68864350
Bug: 70180742
Test: Built policy.
Change-Id: I58a32e38e6384ca55e865e9575dcfe7c46b2ed3c
diff --git a/private/bootanim.te b/private/bootanim.te
index 8c9f6c7..20ff193 100644
--- a/private/bootanim.te
+++ b/private/bootanim.te
@@ -1,3 +1,6 @@
 typeattribute bootanim coredomain;
 
 init_daemon_domain(bootanim)
+
+# b/68864350
+dontaudit bootanim unlabeled:dir search;