Fix logic in tryLock()

Author: DomGarguilo

core/src/main/java/org/apache/accumulo/core/fate/zookeeper/DistributedReadWriteLock.java

@@ -182,7 +182,7 @@ public boolean tryLock() {
     @Override
     public boolean tryLock(long time, TimeUnit unit) throws InterruptedException {
       Timer timer = Timer.startNew();
-      while (timer.hasElapsed(time, unit)) {
+      while (!timer.hasElapsed(time, unit)) {
         if (tryLock()) {
           return true;
         }