[Thread] move ot-daemon to the tethering module

The com.android.threadnetwork module is merged into
the com.android.tethering module now.

Bug: 296211911
Change-Id: I9fec91fff4e2ae4be26da4b0f52e739c4a251cd2
diff --git a/apex/com.android.tethering-file_contexts b/apex/com.android.tethering-file_contexts
index af366d8..53843ea 100644
--- a/apex/com.android.tethering-file_contexts
+++ b/apex/com.android.tethering-file_contexts
@@ -1,3 +1,4 @@
 (/.*)?                  u:object_r:system_file:s0
 /bin/for-system/clatd   u:object_r:clatd_exec:s0
+/bin/ot-daemon          u:object_r:ot_daemon_exec:s0
 /lib(64)?(/.*)          u:object_r:system_lib_file:s0