title: When Hystrix short-circuits and the circuit is OPEN it never closes even after the the offending service is back up
body: <p>I am having an Issue where when the hystrix circuit breaker trips, it does not close ever again. I have turned logging to debug and I do not see it trying to allow a test request through in which case it seems to me It will never close since its only supposed to close when a test execution goes through successfully indicating that the offending service is now healthy. According to the documentation the <a href="https://github.com/Netflix/Hystrix/wiki/Configuration#CommandCircuitBreaker" rel="nofollow noreferrer">Circuit break configuration defaults should be working</a> but I can not seem to tell why the test request is never allowed through.</p>
  
  <pre><code>2016-02-18 09:00:38,782 noodle-soup-service application-akka.actor.default-dispatcher-7 ERROR akka.actor.OneForOneStrategy - CallServiceCommand short-circuited and fallback failed.
  com.netflix.hystrix.exception.HystrixRuntimeException: CallServiceCommand short-circuited and fallback failed.
      at com.netflix.hystrix.AbstractCommand$16.call(AbstractCommand.java:816) ~[com.netflix.hystrix.hystrix-core-1.4.23.jar:1.4.23]
      at com.netflix.hystrix.AbstractCommand$16.call(AbstractCommand.java:790) ~[com.netflix.hystrix.hystrix-core-1.4.23.jar:1.4.23]
      at rx.internal.operators.OperatorOnErrorResumeNextViaFunction$1.onError(OperatorOnErrorResumeNextViaFunction.java:99) ~[io.reactivex.rxjava-1.1.0.jar:1.1.0]
      at rx.internal.operators.OperatorDoOnEach$1.onError(OperatorDoOnEach.java:71) ~[io.reactivex.rxjava-1.1.0.jar:1.1.0]
  
  ...
  
  Caused by: java.lang.RuntimeException: Hystrix circuit short-circuited and is OPEN
      at com.netflix.hystrix.AbstractCommand$1.call(AbstractCommand.java:414) ~[com.netflix.hystrix.hystrix-core-1.4.23.jar:1.4.23]
      ... 38 common frames omitted
  </code></pre>