Disallow 0-vote arbiters

[conn1] command admin.$cmd command: replSetReconfig { replSetReconfig: 

     { _id: "asyaRS", 

       version: 64512.0, 

       members: [ 

           { _id: 0.0, host: "localhost:27017", priority: 2.0 }, 

           { _id: 1.0, host: "localhost:29017", votes: 0.0, priority: 0.0, hidden: true }, 

           { _id: 2.0, host: "localhost:33333", votes: 0.0, priority: 0.0, arbiterOnly: true } 

        ] 

       } } keyUpdates:0 numYields:0 locks(micros) W:1447 w:263 reslen:37 6ms