Re-connect throttle TimerTask continues to run after client.disconnect()

[stevejagodzinski]

STR:

1. Create an impl of DefaultHookupClient with a specified throttle
   val uri="ws://doesnotexist:8080"
   val reconnectThrottle = IndefiniteThrottle(Duration(100, MILLISECONDS), Duration(2000, MILLISECONDS))
   val clientImpl = new DefaultHookupClient(HookupClientConfig(new URI(uri), throttle = reconnectThrottle)) { // impl omitted }

2. connect()

3. clientImpl.disconnect()

Connection to host [ws://doesnotexist:8080] lost, reconnecting in 2 seconds
Connection to host [ws://doesnotexist:8080] lost, reconnecting in 2 seconds
Connection to host [ws://doesnotexist:8080] lost, reconnecting in 2 seconds