Have a working test for the new "ping" command.

src/bin/bind10/bob.spec

@@ -21,6 +21,11 @@
         "command_name": "shutdown",
         "command_description": "Shut down BIND 10",
         "command_args": []
+      },
+      {
+        "command_name": "ping",
+        "command_description": "Ping the boss process",
+        "command_args": []
       }
     ]
   }