Allow system_server to make keystore_data_file links am: a67411c9

am: 28a896bf

Change-Id: I03d4d3dddf505125b09750f2b79b426edf06c158

system_server.te

@@ -223,6 +223,7 @@ allow system_server system_data_file:dir create_dir_perms;
 allow system_server system_data_file:notdevfile_class_set create_file_perms;
 allow system_server keychain_data_file:dir create_dir_perms;
 allow system_server keychain_data_file:file create_file_perms;
+allow system_server keychain_data_file:lnk_file create_file_perms;
 
 # Manage /data/app.
 allow system_server apk_data_file:dir create_dir_perms;