Revert "Riolog: Image v13 doesn't handle keepalives properly; disable. (

#164)" (#165)

This is fixed in v16.

This reverts commit 66f3803.

edu.wpi.first.wpilib.plugins.riolog/src/netconsole2/RioConsole.java

@@ -221,8 +221,7 @@ private DataInputStream connect(int team) {
         sender = null;
       }, "RioConsoleSender");
       sender.setDaemon(true);
-      // For image 2018v13, don't send keep alives
-      //sender.start();
+      sender.start();
     }
     return in;
   }