Allow installd to delete from preloads/file_cache

am: a64b6850

Change-Id: I7724ba18bd6d8d6ae7d4f87986de9200cb5bc761

public/installd.te

@@ -130,6 +130,11 @@ allow installd permission_service:service_manager find;
 allow installd block_device:dir { search };
 allow installd labeledfs:filesystem { quotaget quotamod };
 
+# Allow installd to delete from /data/preloads when trimming data caches
+# TODO b/34690396 Remove when time-based purge policy for preloads is implemented in system_server
+allow installd preloads_data_file:file { r_file_perms unlink };
+allow installd preloads_data_file:dir { r_dir_perms write remove_name rmdir };
+
 ###
 ### Neverallow rules
 ###