jukebox: reassign mpd access control to the firewall

dunno how to reliably ensure the mpd service is ordered after each
binds_to address is bound (& so bind(3)able)

inventories/default.nix

@@ -187,9 +187,7 @@
           };
           roles.default.machines.neptune = {
             settings = {
-              binds = [
-                "10.0.0.9"
-              ];
+              binds = [ "wlp1s0" ];
               disks.m3 = {
                 uuid = "105D-319E";
                 mountOptions = ["utf8"];