update test with correct API call (#131)

Co-authored-by: romil choksi <rchoksi@cloudera.com>
diff --git a/src/main/java/org/apache/accumulo/testing/randomwalk/conditional/Init.java b/src/main/java/org/apache/accumulo/testing/randomwalk/conditional/Init.java
index 0661a69..2698809 100644
--- a/src/main/java/org/apache/accumulo/testing/randomwalk/conditional/Init.java
+++ b/src/main/java/org/apache/accumulo/testing/randomwalk/conditional/Init.java
@@ -53,7 +53,7 @@
     for (int i = 0; i < numBanks; i++)
       banks.add(i);
     // shuffle for case when multiple threads are adding banks
-    Collections.shuffle(banks, (Random) state.get("rand"));
+    Collections.shuffle(banks, (Random) state.getRandom());
 
     ConditionalWriter cw = (ConditionalWriter) state.get("cw");