sepolicy: allow system apps to access ASEC

Required for Settings to show name/icon of apps on sd card
(permission copied from untrusted_app)

Also removed duplicate permission (from domain) in untrusted_app

Change-Id: Ib2b3bee4dfb54ad5e45b392fd9bfd65add4a00bf

system_app.te

@@ -45,6 +45,9 @@ allow system_app logd_prop:property_service set;
 allow system_app anr_data_file:dir ra_dir_perms;
 allow system_app anr_data_file:file create_file_perms;
 
+# Settings need to access app name and icon from asec
+allow system_app asec_apk_file:file r_file_perms;
+
 allow system_app system_app_service:service_manager add;
 
 allow system_app keystore:keystore_key {

untrusted_app.te

@@ -32,7 +32,6 @@ allow untrusted_app app_data_file:file { rx_file_perms execmod };
 allow untrusted_app tun_device:chr_file rw_file_perms;
 
 # ASEC
-allow untrusted_app asec_apk_file:dir { getattr };
 allow untrusted_app asec_apk_file:file r_file_perms;
 # Execute libs in asec containers.
 allow untrusted_app asec_public_file:file { execute execmod };