Add policy for apexd.

apexd is a new daemon for managing APEX packages installed
on the device. It hosts a single binder service, "apexservice".

Bug: 112455435
Test: builds, binder service can be registered,
      apexes can be accessed, verified and mounted
Change-Id: I634ad100f10b2edcd9a9c0df0d33896fa5d4ed97
diff --git a/private/compat/27.0/27.0.ignore.cil b/private/compat/27.0/27.0.ignore.cil
index 7d5017d..df3f95a 100644
--- a/private/compat/27.0/27.0.ignore.cil
+++ b/private/compat/27.0/27.0.ignore.cil
@@ -8,6 +8,13 @@
     activity_task_service
     adb_service
     app_binding_service
+    apex_data_file
+    apex_mnt_dir
+    apex_key_file
+    apex_service
+    apexd
+    apexd_exec
+    apexd_tmpfs
     atrace
     binder_calls_stats_service
     biometric_service