@Override
  public void quorumLost(DistributionManager distributionManager,
      Set<InternalDistributedMember> failures, List<InternalDistributedMember> remaining) {}
Return the time in sec to wait before sending an alert while waiting for ack replies. Note that
the ack wait threshold may change at runtime, so we have to consult the system every time.
geode-core/src/main/java/org/apache/geode/internal/cache/InitialImageFlowControl.java