OS-2001 disk-monitor should activate fault/fail indicators

*** 124,133 ****
--- 124,134 ----
          topo_mod_zalloc;
          topo_mod_smbios;
          topo_node_asru;
          topo_node_asru_set;
          topo_node_bind;
+         topo_node_child_walk;
          topo_node_facility;
          topo_node_facbind;
          topo_node_flags;
          topo_node_fru;
          topo_node_fru_set;