Give drmserver the ability to interact with apk_data_file dirs.

Bug: 8539042
Change-Id: I87165fd83b1abef9eb7bf4c403714150aaefed6e

drmserver.te

@@ -22,5 +22,6 @@ allow drmserver port:tcp_socket name_connect;
 allow drmserver tee_device:chr_file rw_file_perms;
 allow drmserver platform_app_data_file:file { read write getattr };
 allow drmserver app_data_file:file { read write getattr };
+allow drmserver apk_data_file:dir { write add_name remove_name };
 allow drmserver sdcard_type:file { read write getattr };
 allow drmserver efs_file:file { open read getattr };