bug fix: Update CounterID after destroying them.

Change-Id: I773addca7717a19038dea5476ae76479cd11894d
diff --git a/src/test/java/net/onrc/onos/core/datastore/AtomicCounterTest.java b/src/test/java/net/onrc/onos/core/datastore/AtomicCounterTest.java
index 15feda2..6bae01e 100644
--- a/src/test/java/net/onrc/onos/core/datastore/AtomicCounterTest.java
+++ b/src/test/java/net/onrc/onos/core/datastore/AtomicCounterTest.java
@@ -42,6 +42,7 @@
         counterID = client.getTable(TEST_COUNTER).getTableId();
         client.setCounter(counterID, LONG_ZERO, 0L);
         client.destroyCounter(counterID, LONG_ZERO);
+        counterID = client.getTable(TEST_COUNTER).getTableId();
     }
 
     @Test